renamed tests to describe what they were testing.

got rid of empty scenarios as it was causing an issue in cucumber (cucumber/cucumber-ruby#967).
updated tests to use new line numbers because of empty scenario issue.

spec/lib/parallel_calabash/feature_grouper_spec.rb

@@ -109,17 +109,17 @@
   describe :scenario_groups do
     it 'should groups all @runnable scenario equally into 2 groups' do
       expect(ParallelCalabash::FeatureGrouper.scenario_groups(2,{:feature_folder => ["spec/test_data/features"],:cucumber_options => "--tags @runnable"})).to eq \
-      [["spec/test_data/features/aaa.feature:10", "spec/test_data/features/aaa.feature:16", "spec/test_data/features/aaa.feature:19", "spec/test_data/features/bbb.feature:13"], ["spec/test_data/features/bbb.feature:16", "spec/test_data/features/ccc.feature:11", "spec/test_data/features/ddd.feature:7", "spec/test_data/features/ddd.feature:10"]]
+      [["spec/test_data/features/aaa.feature:12", "spec/test_data/features/aaa.feature:20", "spec/test_data/features/aaa.feature:24", "spec/test_data/features/bbb.feature:16"], ["spec/test_data/features/bbb.feature:20", "spec/test_data/features/ccc.feature:13", "spec/test_data/features/ddd.feature:8", "spec/test_data/features/ddd.feature:12"]]
     end
 
-    it 'should groups all @runnable scenario equally into 2 groups' do
+    it 'should groups all @runnable scenario equally into 3 groups' do
       expect(ParallelCalabash::FeatureGrouper.scenario_groups(3,{:feature_folder => ["spec/test_data/features"],:cucumber_options => "--tags @runnable"})).to eq \
-      [["spec/test_data/features/aaa.feature:10", "spec/test_data/features/aaa.feature:16", "spec/test_data/features/ddd.feature:7"], ["spec/test_data/features/aaa.feature:19", "spec/test_data/features/bbb.feature:13", "spec/test_data/features/ddd.feature:10"], ["spec/test_data/features/bbb.feature:16", "spec/test_data/features/ccc.feature:11"]]
+      [["spec/test_data/features/aaa.feature:12", "spec/test_data/features/aaa.feature:20", "spec/test_data/features/ddd.feature:8"],["spec/test_data/features/aaa.feature:24", "spec/test_data/features/bbb.feature:16", "spec/test_data/features/ddd.feature:12"], ["spec/test_data/features/bbb.feature:20", "spec/test_data/features/ccc.feature:13"]]
     end
 
-    it 'should groups all @runnable scenario equally into 2 groups' do
+    it 'should groups all @runnable scenario equally into 4 groups' do
       expect(ParallelCalabash::FeatureGrouper.scenario_groups(4,{:feature_folder => ["spec/test_data/features"],:cucumber_options => "--tags @runnable"})).to eq \
-      [["spec/test_data/features/aaa.feature:10", "spec/test_data/features/aaa.feature:16"], ["spec/test_data/features/aaa.feature:19", "spec/test_data/features/bbb.feature:13"], ["spec/test_data/features/bbb.feature:16", "spec/test_data/features/ccc.feature:11"], ["spec/test_data/features/ddd.feature:7", "spec/test_data/features/ddd.feature:10"]]
+      [["spec/test_data/features/aaa.feature:12", "spec/test_data/features/aaa.feature:20"], ["spec/test_data/features/aaa.feature:24", "spec/test_data/features/bbb.feature:16"], ["spec/test_data/features/bbb.feature:20", "spec/test_data/features/ccc.feature:13"], ["spec/test_data/features/ddd.feature:8", "spec/test_data/features/ddd.feature:12"]]
     end
 
   end

spec/test_data/features/aaa.feature

@@ -1,43 +1,57 @@
 Feature: aaa feature
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1 @runnable
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1 @runnable
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1 @runnable
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step

spec/test_data/features/bbb.feature

@@ -1,19 +1,25 @@
 Feature: bbb.feature
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag12
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1 @runnable
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1 @runnable
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step

spec/test_data/features/ccc.feature

@@ -2,13 +2,17 @@ Feature: ccc.feature
 
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1 @runnable
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step

spec/test_data/features/ddd.feature

@@ -1,10 +1,13 @@
 Feature: ddd.feature
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1 @runnable
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1 @runnable
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step

spec/test_data/features/eee.feature

@@ -1,7 +1,9 @@
 Feature: eee feature
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step
 
   @tag1
-  Scenario:
+  Scenario: Scenario with name
+    Given I am just a simple step