Add Android SDK formula

Signed-off-by: Max Howell <max@methylblue.com>

Added an alias. Cleaned it up a bit.

Also removed the chmod 0777, '..' line as it made no sense and had no comment to justify it. Always comment weird stuff!

Formula/android-sdk.rb

@@ -0,0 +1,33 @@
+require 'formula'
+
+class AndroidSdk <Formula
+  url 'http://dl.google.com/android/android-sdk_r04-mac_86.zip'
+  homepage 'http://developer.android.com/index.html'
+  md5 'b08512765aa9b0369bb9b8fecdf763e3'
+  version 'r4'
+
+  skip_clean 'add-ons'
+  skip_clean 'platforms'
+  skip_clean 'temp'
+
+  aka :android
+
+  def install
+    mkdir %w[temp docs] << bin
+
+    mv 'SDK Readme.txt', 'README'
+    prefix.install Dir['*']
+
+    %w[adb android apkbuilder ddms dmtracedump draw9patch emulator 
+           hierarchyviewer hprof-conv layoutopt mksdcard traceview
+           zipalign].each do |tool|
+      (bin+tool).make_link(prefix+'tools'+tool)
+    end
+  end
+
+  def caveats; "\
+We agreed to the Android SDK License Agreement for you by downloading the SDK.
+If this is unacceptable you should uninstall.
+You can read the license at: http://developer.android.com/sdk/terms.html"
+  end
+end