bundler/bundler — pull request #3131 by eloyesp (2014-08-12 15:04:01+00:00)
Title: Add a notice about preventing publishing the gem.

I always forget about the environment variable to use to release a version without publishing it (for private gems).

This add a notice on the long description so the short one keeps the same.

Sample output:

```
$ rake -T release
rake release # Create tag v1.6.5 and build and push bundler-1.6.5.gem to Rubygems
$ rake -D release
rake release
Create tag v1.6.5 and build and push bundler-1.6.5.gem to Rubygems
To prevent publishing in Rubygems use `gem_push=no rake release`
```