Fixed odd parsing of array of strings

I made stripAngular check if the elem value is an object or not. This
way, it will push it in as a string if not or run it through
stripRestangular again.
Update README.md

Modifying the setErrorInterceptor / on the example was addErrorInterceptor
Merge pull request #825 from marcomafessolli/patch-1

Update README.md
Merge pull request #824 from Aourin/master

Fixed odd parsing of array of strings
Correct #815
Update README.md, setParentless description

Issue: [#840]
Remove doc form extending Promise from README
Update README: remove reference to listTypeIsArray (deprecated)
Update README: update reference to "responseExtractor" to "addResponseInterceptor"
Clarify Error Message 

Change "You can't call .one(12)" -> "For example, you can't call .one(12)." This clarifies the expression to make sure people understand .one(12) call is an example of something you can't do.
Fix minor typo in README
Merge pull request #861 from PowerKiKi/patch-2

Fix minor typo in README
Merge pull request #856 from hjast/patch-1

Clarify Error Message
Merge pull request #842 from omfgitsjack/patch-1

Update README.md, setParentless description
Merge pull request #850 from oneeman/master

Update README: remove reference to listTypeIsArray (deprecated)
use mocha-reporter in karma
add .idea to .gitignore
Merge branch 'master' of https://github.com/mgonto/restangular.git
Fix posting element created on client