Added guard to project to run tests automatically.

Guardfile

@@ -0,0 +1,9 @@
+guard :rspec do
+  watch(%r{^spec/.+_spec\.rb$})
+  watch(%r{^lib/(.+)\.rb$})     { |m| "spec/#{m[1]}_spec.rb" }
+  watch(%r{^lib/homesick/.*\.rb}) { "spec" }
+  watch('spec/spec_helper.rb')  { "spec" }
+
+  notification :tmux, display_message: true
+end
+