Use Dalli for Session Store
reduce gem dependencies
update rubocop to pass
add database.yml.example file for new devs
Merge branch 'master' of https://github.com/CruGlobal/watchthinkchat into THINK-159-TRN

Conflicts:
	Gemfile.lock
updated gem file
put session store into redis
Merge pull request #16 from CruGlobal/THINK-159-TRN

THINK-159-TRN