Docs corrections.
Docs edits
Docs corrections.
Merge branch 'modernization' of github.com:aoberoi/Opentok-Ruby-SDK into v2.2-docs

Conflicts:
	README.md
Docs edits
Merge branch 'modernization' of github.com:aoberoi/Opentok-Ruby-SDK into v2.2-docs
Docs corrections.
Docs correction.
remove todo
Merge branch 'jeffswartz-v2.2-docs' into modernization