add installation instructions for rails
Merge pull request #117 from doodzik/master

add installation instructions for rails
build the docs in `dist` task
make clear the Ruby gem is unofficial
also register the OAuth 2.0 authorizer
require the authorizer factory to be specified for setup
fixed examples in API docs
fixed examples
formatting
make the authorizer specification optional
better log message
fixed examples
formatting
Merge branch 'master' into sub-packages
fixed examples
fixed export of cookie store, clear on examples index
use export default for cookie store
added store#replace
Merge branch '0.3.0' into sub-packages
export utils for extensions packages