vscode-ruby does not auto-detect Ruby syntax from shebang

[mdub]

Your environment

• vscode-ruby version: 0.15.0
• Ruby version: 2.4.2
• VS Code version: 1.19.2
• Operating System: OS X

Make sure you have ruby, ruby-debug-ide and ruby-debug-basex19 installed before submitting your issue -- thank you !

Expected behavior

When opening a file with first line #! /usr/bin/env ruby, VS Code should automatically select "ruby" syntax (even if the file does not have an .rb extension).

Actual behavior

VS Code assumes the file is "Plain Text".

Steps to reproduce the problem

Create a file called "blah" with contents:

#! /usr/bin/env ruby
puts "Hello"

and open this in VS Code.

[wingrunr21]

This is resolved by #249

[rebornix]

Already fixed in 0.16.0.