Added new firmata commands.

Gemfile

@@ -1,5 +1,3 @@
 source "http://rubygems.org"
-
 # Specify your gem's dependencies in artoo-arduino.gemspec
 gemspec
-#gem 'hybridgroup-firmata', path: '/path/to/hybridgroup-firmata'

lib/artoo/commands/firmata.rb

@@ -0,0 +1,43 @@
+require 'artoo/commands/commands'
+
+module Artoo
+  module Commands
+    class Firmata < Commands
+      package_name "firmata"
+
+      desc "upload", "Uploads firmata to the arduino using avrdude"
+      option :serial_port, aliases: '-p', default: "/dev/ttyACM0", desc: "serial port address e.g. /dev/ttyACM0"
+      def upload
+        part = '-patmega328p'
+        programmer = '-carduino'
+        baudrate = '-b115200'
+        hexPath = File.join(File.expand_path(File.dirname(__FILE__)), "hex/StandardFirmata.cpp.hex")
+        hexFile = "-Uflash:w:#{ hexPath }:i"
+        case os
+        when :linux
+          port = "-P#{ options[:serial_port] }"
+          run("avrdude #{ part } #{ programmer } #{ port } #{ baudrate } -D #{ hexFile }")
+        when :macosx
+          port = "-P#{ options[:serial_port] }"
+          run("avrdude #{ part } #{ programmer } #{ port } #{ baudrate } -D #{ hexFile }")
+        else
+          say "OS not yet supported..."
+        end
+      end
+
+      desc "install", "Install avrdude in order to be able to upload firmata to the arduino"
+      def install
+        case os
+        when :linux
+          run('sudo apt-get install avrdude')
+        when :macosx
+          Bundler.with_clean_env do
+            run("brew install avrdude")
+          end
+        else
+          say "OS not yet supported..."
+        end
+      end
+    end
+  end
+end