kjell 0.2.2

Closes Homebrew/homebrew#23924.

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

Formula/kjell.rb

@@ -0,0 +1,29 @@
+require 'formula'
+
+class Kjell < Formula
+  homepage 'http://karlll.github.io/kjell/'
+  url 'https://github.com/karlll/kjell.git', :tag => '0.2.2'
+  sha1 '514fc79b62093edd4149b9d1ab54874d4e9e3fae'
+
+  depends_on "erlang"
+
+  def install
+    system "make"
+    system "make", "configure", "PREFIX=#{prefix}"
+    system "make", "install", "NO_SYMLINK=1"
+    system "make", "install-extensions"
+  end
+
+  test do
+    require 'open3'
+    Open3.popen3("#{bin}/kjell") do |stdin, stdout, _|
+      stdin.write("q().\n")
+      stdin.close
+    end
+  end
+
+  def caveats
+    "Extension kjell-prompt requires a powerline patched font. See https://github.com/Lokaltog/powerline-fonts"
+  end
+
+end