[rake] Temp disable spec run on release, because locally Xcode is failing the examples at the ‘install’ phase.

Fixes #1503

separated spec:unit from spec:unit_quiet

Add pod repo remove [name] command

Deletes the repo named in the command.

Compile .xcassets files from pods

Update CHANGELOG.md for CocoaPods/Core#30

[Changelog]

Going to miss the Appie endorsement… 🐶

Closes #1462

See #1450

Closes #1454

Fixed a crash which was causing a failure in `pod lib create` if the name of
the Pod included spaces. As spaces are not supported now this is gracefully
handled with an informative message.

Fixes #1456