chore(deploy): Update deploy to use LTS node host (#44)

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## Description

After disabling the `node` host due to a build error, the release was not deployed since it was set to run on the `node` host. 

Going forward we are going to use the node LTS as our deploy host.  
## How Has This Been Tested?

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## Screenshots (if appropriate):

## Checklist:

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*   [x] I have read the [**CONTRIBUTING** document](https://github.com/eventbrite/eventbrite-sdk-javascript/blob/master/CONTRIBUTING.md).
*   [x] I have updated the documentation accordingly.
*   [x] I have added tests to cover my changes.
*   [x] I have run `yarn validate` to ensure that tests, typescript and linting are all in order.

.travis.yml

@@ -19,4 +19,4 @@ deploy:
   provider: script
   script: npx semantic-release
   on:
-    node: "node"
+    node: "10"