Remove legacy versioning from Guardfile

Author: pex

Guardfile

@@ -1,7 +1,7 @@
 # A sample Guardfile
 # More info at https://github.com/guard/guard#readme
 
-guard 'rspec', :version => 1 do
+guard :rspec do
   watch(%r{^spec/.+_spec\.rb$})
   watch(%r{^lib/(.+)\.rb$})     { |m| "spec/lib/#{m[1]}_spec.rb" }
   watch('spec/spec_helper.rb')  { "spec" }