Add Closure Compiler

closure-compiler.json

@@ -0,0 +1,17 @@
+{
+	"homepage": "https://developers.google.com/closure/compiler/",
+	"description": "The Closure Compiler is a tool for making JavaScript download and run faster. Instead of compiling from a source language to machine code, it compiles from JavaScript to better JavaScript.",
+	"version": "20190929",
+	"license": "Apache 2.0",
+	"url": "https://dl.google.com/closure-compiler/compiler-latest.zip",
+	"hash": "md5:ad95bbae431f783f152215bf6fa9b783",
+	"bin": [
+		[
+			"closure-compiler-v20190929.jar",
+			"closure-compiler"
+		]
+	],
+	"checkver": {
+		"github": "https://github.com/google/closure-compiler"
+	}
+}