Update README.md

Fixes spelling error "you an" -> "you can"
Merge pull request #19 from alexberry721/master

Fixes spelling error
Update README.md

Incorporating edits. Mostly cleaning up nits. Also fixed a bit of code to reflect current way to create entities.
Merge pull request #20 from stevetraut/patch-1

Update README.md
Added helper function to build asset URLs
Change param in comments from endpoint to uuid
Merge pull request #21 from danielsimons1/buildAssetURL

Helper function to build asset URLs
Merge branch 'development' of github.com:r2fresh/usergrid-javascript-sdk into development

Conflicts:
	README.md
delete README.md