Added detection for the Ioke language.

lib/linguist/languages.yml

@@ -439,6 +439,11 @@ Io:
   extensions:
   - .io
 
+Ioke:
+  type: programming
+  extensions:
+  - .ik
+
 JSON:
   type: data
   group: JavaScript

test/fixtures/hello.ik

@@ -0,0 +1,3 @@
+#!/usr/bin/env ioke
+
+"Hello world." println

test/test_blob.rb

@@ -314,6 +314,9 @@ class TestBlob < Test::Unit::TestCase
 
     # https://github.com/graydon/rust
     assert_equal Language['Rust'], blob("hello.rs").language
+
+    # https://github.com/olabini/ioke
+    assert_equal Language['Ioke'], blob("hello.ik").language
   end
 
   def test_lexer