Update README.md
Update README.md
Fixing a bug
Adjust js file name to ArcGIS.js
Merge pull request #8 from vmachuca/master

Improvements
Merge branch 'master' of https://github.com/Esri/100-lines-or-less-js into gh-pages
Merge branch 'master' of https://github.com/Esri/100-lines-or-less-js
Merge branch 'master' into gh-pages