Adds iojs formula meeting requests by @mikemcquaid

Library/Formula/iojs.rb

@@ -0,0 +1,37 @@
+class Iojs < Formula
+  homepage "https://iojs.org/"
+  url "https://iojs.org/dist/v1.0.4/iojs-v1.0.4.tar.xz"
+  sha256 "c902f5abbd59c56346680f0b4a71056c51610847b9576acf83a9c210bf664e98"
+
+  keg_only "`iojs` symlinks conflict with `node` but can be used by prepending your PATH"
+
+  option "with-debug", "Build with debugger hooks"
+
+  depends_on :python => :build
+
+  def install
+    args = %W[--prefix=#{prefix} --without-npm]
+    args << "--debug" if build.with? "debug"
+
+    system "./configure", *args
+    system "make", "install"
+  end
+
+  def caveats; <<-EOS.undent
+    `iojs` was installed without `npm`.
+
+    To intall `npm` and have it use `iojs`, install `node` and add
+    iojs to the front of your path:
+      export PATH=#{Formula["iojs"].opt_bin}:$PATH
+    EOS
+  end
+
+  test do
+    path = testpath/"test.js"
+    path.write "console.log('hello');"
+
+    output = `#{bin}/iojs #{path}`.strip
+    assert_equal "hello", output
+    assert_equal 0, $?.exitstatus
+  end
+end