add ec2-ami-tools

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

* Use AWS base class
* Use alternate HOME variable

Formula/ec2-ami-tools.rb

@@ -0,0 +1,18 @@
+require 'formula'
+
+# Require ec2-api-tools to get the base class
+require "#{File.dirname __FILE__}/ec2-api-tools.rb"
+
+class Ec2AmiTools <AmazonWebServicesFormula
+  homepage 'http://developer.amazonwebservices.com/connect/entry.jspa?externalID=368'
+  url 'http://s3.amazonaws.com/ec2-downloads/ec2-ami-tools-1.3-45758.zip'
+  md5 'b3fd0dd779277ba40f0f234bfa309135'
+
+  def install
+    standard_install
+  end
+
+  def caveats
+    standard_instructions "EC2_AMITOOL_HOME"
+  end
+end