Update README.md

Minor grammar changes.
fixed 'description' used for 'discussion'

@indytechcook it looks like you are still interchanging remoteObjectType, remoteObjectKey, and remoteObjectName.   I think you only one one of these.
stuff
Update db config in grunt file
Add info for tests
Merge branch 'master' of github.com:topcoderinc/serenity-discussions-api

Conflicts:
	README.md
make the test run without starting app
Merge pull request #1 from peakpado/master

make the test run without starting app