Add v0.0.1 of NSEnumeratorLinq podspec

An [NSEnumerator LINQ category](https://github.com/k06a/NSEnumeratorLinq) that adds several of the [Enumerable methods](http://msdn.microsoft.com/en-us/library/system.linq.enumerable_methods.aspx) from Microsoft's [LINQ](http://en.wikipedia.org/wiki/Language_Integrated_Query) to Cocoa.