added watchr script

watchr.watchr.rb

@@ -0,0 +1,32 @@
+puts "\n### Watching specs###\n"
+
+def cmd() 'spec -O spec/spec.opts '; end
+
+def run_all_specs
+  puts "\nRunning entire suite..."
+  system(cmd + 'spec/')
+end
+
+def run_spec(spec)
+  if File.exists?(spec)
+    puts "Running #{spec}"
+    system(cmd + spec)
+    run_all_specs if $?.exitstatus == 0
+  end
+end
+
+watch('^spec\/(.*)_spec\.rb') {|md| run_spec(md[0]) }
+watch('^lib/(.*)\.rb') {|md| 
+  filename = md[1].split('/')[1] # extract the relevant part of the filename
+  run_spec("spec/#{filename}_spec.rb") 
+}
+# watch('spec/spec_helper.rb') {|md| run_all_specs }
+
+# Ctrl-\
+Signal.trap('QUIT') do
+ puts "\n### Running all specs###\n"
+ run_all_specs
+end
+
+# Ctrl-C
+Signal.trap('INT') { abort("\n") }