Remove guard from the gemspec and put it in it's own group so Travis stops trying to install it

Author: zanker

.travis.yml

@@ -1,4 +1,4 @@
-bundler_args: --without development
+bundler_args: --without guard
 rvm:
   - 1.8.7
   - 1.9.3

Gemfile

@@ -3,6 +3,10 @@ gemspec
 
 gem "rake"
 
+group :guard do
+  gem "guard-rspec", "~>0.6.0"
+end
+
 platforms :jruby do
   gem "jruby-openssl"
 end

ruby-smugmug.gemspec

@@ -10,12 +10,11 @@ Gem::Specification.new do |s|
   s.homepage    = "http://github.com/zanker/ruby-smugmug"
   s.summary     = "SmugMug 1.3.0 API gem"
   s.description = "Gem for reading and writing data from the SmugMug 1.3.0 API."
-  
+
   s.required_rubygems_version = ">= 1.3.6"
   s.rubyforge_project         = "ruby-smugmug"
 
   s.add_development_dependency "rspec", "~>2.8.0"
-  s.add_development_dependency "guard-rspec", "~>0.6.0"
 
   s.files        = Dir.glob("lib/**/*") + %w[LICENSE README.md CHANGELOG.md Rakefile]
   s.require_path = "lib"