add readme

README.md

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+Reload Jasmine test suites in Firefox using (MozRepl)[https://github.com/bard/mozrepl] and this lovely gem.
+
+Use it with watchr:
+
+		require 'jasmine-mozrepl'
+
+		extend Jasmine::MozRepl
+
+		watch('public/javascript/.*\.js') { do_reload }
+		watch('spec/javascripts/.*_spec\.js') { do_reload }
+
+		def do_reload
+  		system %{growlnotify -m "#{repl_reload(:echo_to_console => true)}" -t "Jasmine suite"}
+  	end
+  
+  	do_reload
+
+repl_reload options:
+* :host is the host to connect to (default: 127.0.0.1)
+* :post is the post to connect to (default: 4242)
+* :jasmine_matcher is the address in the address bar to search for (default: "localhost:8888")
+* :echo_to_console writes the success/failure message to the console in red/green
+
+repl_reload returns the success/failure count message from Jasmine so you can use it as you wish.
+