Add required gemspec attributes name and summary.
Add required gemspec attributes name and summary.

According to rubygems docs following gemspec attributes are required:
* name
* version
* summary

http://docs.rubygems.org/read/chapter/20#name
http://docs.rubygems.org/read/chapter/20#version
http://docs.rubygems.org/read/chapter/20#summary

Before this patch specs failed on all 1.8 rubies with error:
> catch nil is not a symbol TypeError`

See carlhuda/bundler#2131

Specs for ree on Travis have been disabled in this commit
gregorym/bump@ec5be88

After this patch specs pass again on 1.8.

gregorym/bump