Renamed method

Renamed method
Near Expiry password feature

Near Expiry password feature
Updated as per comments and added refresh session

Updated as per comments and added refresh session
Merge pull request #27 from MSOpenTech/near-expiry-password

Near expiry password feature
clean up
Merge pull request #29 from MSOpenTech/near-expiry-password

clean up as per afshin's comments
Merge branch 'dev' into newcache

Conflicts:
	src/ADAL.Common/AuthenticationContext.cs
	src/ADAL.Common/OAuth2Response.cs