Fix developer experience for local building

[bingenito]

• Add postinstall to run lerna bootstrap
• Update readme to reflect using "npm start" for local hosting
• Fix build task and remove non-working analysis task and watch task which shouldn't be a task as it would run indefinitely not allowing any other tasks

Fixes #242

[codecov]

Codecov Report

Merging #244 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #244   +/-   ##
======================================
  Coverage    93.4%   93.4%           
======================================
  Files          16      16           
  Lines        1485    1485           
  Branches      249     249           
======================================
  Hits         1387    1387           
  Misses         98      98