Set mocha version

Author: martencassel

smart_proxy_realm_ad_plugin.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.test_files  = Dir['test/**/*']
 
   s.add_development_dependency('rake')
-  s.add_development_dependency('mocha')
+  s.add_development_dependency('mocha', '~> 1.3.0')
   s.add_development_dependency('test-unit')
   s.add_dependency('rkerberos')
   s.add_dependency('radcli')