New formula: rexster

Closes Homebrew/homebrew#37275.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Formula/rexster.rb

@@ -0,0 +1,19 @@
+class Rexster < Formula
+  homepage "http://rexster.tinkerpop.com/"
+  url "http://tinkerpop.com/downloads/rexster/rexster-server-2.6.0.zip"
+  sha256 "e0cfeb9d8dc6be6f472a17eee06618cb1a41f6a981c15c465786a23bbdb2b149"
+
+  depends_on :java
+
+  def install
+    rm_rf Dir["bin/*.bat"]
+    libexec.install Dir["*"]
+
+    inreplace "#{libexec}/bin/rexster.sh", "exec $JAVA", "cd #{libexec}\nexec $JAVA"
+    (bin/"rexster.sh").write_env_script libexec/"bin/rexster.sh", Language::Java.java_home_env
+  end
+
+  test do
+    assert_match(/Rexster version \[#{version}\]/, pipe_output("#{bin}/rexster.sh -v"))
+  end
+end