Add readme note
Sprockets 2.11.1
Merge branch '2.x'

Conflicts:
	README.md
	lib/sprockets/version.rb
Revert "Disable sass cache store"

This reverts commit 655f129fa910f7d46803fdc66d6d5de53a85f210.

Conflicts:
	lib/sprockets/sass_template.rb
Fix execjs error assertion
Merge branch '2.x'

Conflicts:
	test/test_environment.rb
Note importer change as 2.12
Sprockets 2.12.0
Merge branch '2.x'

Conflicts:
	README.md
Merge branch 'master' into non-template-processors