Add deprecation notice to README

README.md

@@ -1,3 +1,11 @@
+
+## Deprecation Warning
+This package is no longer supported. Almost everything this package did is now supported in [PackageCompiler.jl](https://github.com/JuliaLang/PackageCompiler.jl) itself, out of the box.
+
+If you are still using this package, or want to continue its development, let me know and I can make you a maintainer! :)
+
+
+
 # Julia Application Builder
 [![Travis Build Status](https://travis-ci.org/NHDaly/ApplicationBuilder.jl.svg?branch=master)](https://travis-ci.org/NHDaly/ApplicationBuilder.jl) [![Appveyor Build status](https://ci.appveyor.com/api/projects/status/oy9pnimmic9i6qso?svg=true)](https://ci.appveyor.com/project/NHDaly/applicationbuilder-jl)
  [![Coverage Status](https://coveralls.io/repos/github/NHDaly/ApplicationBuilder.jl/badge.svg?branch=master)](https://coveralls.io/github/NHDaly/ApplicationBuilder.jl?branch=master)