Add a Context.sublime-menu file

[jglhelias]

As the issue #3, may I suggest you to add a Context.sublime-menu file to your plugin. This file controls the right-click menu on a file being edited. This will provide the ability to beautify the current file or selection without the obligation to use the keyboard shortcut.

Sample content tested with Sublime Text 3 Build 3126:

[
    { "caption": "-" },
    {
        "caption": "SQL Beautifier",
        "command": "sql_beautifier"
    },
    { "caption": "-" }
]

Note: I don't know if ST3 is able to display context menu depending on the selected syntax. This would be chic.