Fix quotes
Use ruby 1.9 style hashes
Package files from bin/

  * these are used by the Java/Identity consumers of this gem
Allow rake version dependency to float
Remove cf-registrar, bump version to 3.0.0

  * cf-registrar was split out to separate gem cf-registrar

Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>