Allow the upstream projects to follow a standard formatting across, typically leveraging the http://editorconfig.org/.

This file needs to be added to every project either at root if its multiple module project.

The sample .editorconfig file looks like

```

1. EditorConfig is awesome: http://EditorConfig.org

1. top-most EditorConfig file
   root = true

1. Unix-style newlines with a newline ending every file
   [*]
   end_of_line = lf
   insert_final_newline = true

1. Matches multiple files with brace expansion notation
2. Set default charset
   [*. {js,xml,yaml,yml,json}

   ]
   charset = utf-8
   indent_style = space
   indent_size = 2

1. 4 space indentation
   [*.java]
   indent_style = space
   indent_size = 4

```