bfg: 1.11.6 (new formula)

BFG Repo-Cleaner removes large or troublesome blobs like
`git-filter-branch` does, but faster.
http://rtyley.github.io/bfg-repo-cleaner/

Closes Homebrew/homebrew#29562.

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

Formula/bfg.rb

@@ -0,0 +1,16 @@
+require "formula"
+
+class Bfg < Formula
+  homepage "http://rtyley.github.io/bfg-repo-cleaner/"
+  url "http://repo1.maven.org/maven2/com/madgag/bfg/1.11.6/bfg-1.11.6.jar"
+  sha1 "bbe33eb231435c04f5713d05d3b17a9b88d4954e"
+
+  def install
+    libexec.install "bfg-1.11.6.jar"
+    bin.write_jar_script libexec/"bfg-1.11.6.jar", "bfg"
+  end
+
+  test do
+    system "#{bin}/bfg"
+  end
+end