[Specs] Minor fix for

Managing spec-repos:

    [32m$ pod repo add NAME URL [BRANCH][0m

      Clones `URL' in the local spec-repos directory at `~/.cocoapods'. The
      remote can later be referred to by `NAME'.

    [32m$ pod repo update NAME[0m

      Updates the local clone of the spec-repo `NAME'. If `NAME' is omitted
      this will update all spec-repos in `~/.cocoapods'.

Options:

    --help       Show help information
    --silent     Print nothing
    --no-color   Print output without color
    --verbose    Print more information while working
    --version    Prints the version of CocoaPods.

spec/functional/command/repo_spec.rb

@@ -57,7 +57,7 @@ describe "Pod::Command::Repo" do
 
     it "lints a repo" do
       cmd = command('repo', 'lint', 'master')
-      lambda { cmd.run }.should.not.raise Pod::Informative
+      lambda { cmd.run }.should.raise Pod::Informative
       cmd.output.should.include "Missing license type"
     end
   end