Make spec suite green.

spec/unit/command_spec.rb

@@ -26,19 +26,11 @@ describe "Pod::Command::Repo" do
 end
 
 describe "Pod::Command::Install" do
-  it "tells the user that the specified podspec file doesn't exist" do
-    command = Pod::Command::Install.new(argv('/does/not/exist/Some.podspec'))
-    exception = lambda {
-      command.run
-    }.should.raise Pod::Informative
-    exception.message.should.include "The specified podspec `/does/not/exist/Some.podspec' doesn't exist."
-  end
-
   it "tells the user that no Podfile or podspec was found in the current working dir" do
     command = Pod::Command::Install.new(argv)
     exception = lambda {
       command.run
     }.should.raise Pod::Informative
-    exception.message.should.include "No `Podfile' or `.podspec' file found in the current working directory."
+    exception.message.should.include "No `Podfile' found in the current working directory."
   end
 end