Added the MIT license.

Gulpfile.js

@@ -144,6 +144,10 @@ gulp.task('undum-dist', function () {
 gulp.task('html-dist', html('./dist'));
 gulp.task('img-dist', img('./dist/img'));
 gulp.task('audio-dist', audio('./dist/audio'));
+gulp.task('legal-dist', function () {
+  return gulp.src(['LICENSE.txt'])
+         .pipe(gulp.dest("./dist"));
+});
 
 gulp.task('sass-dist', function () {
   return gulp.src('./sass/main.scss')
@@ -168,7 +172,7 @@ gulp.task('coffee-dist', ['undum-dist', 'concatCoffee'], function () {
         .pipe(gulp.dest('./dist/game'));
 });
 
-gulp.task('dist', ['html-dist', 'img-dist', 'sass-dist', 'coffee-dist', 'audio-dist'],
+gulp.task('dist', ['html-dist', 'img-dist', 'sass-dist', 'coffee-dist', 'audio-dist', 'legal-dist'],
   function () {
     return;
 });

LICENSE.txt

@@ -0,0 +1,20 @@
+Copyright (c) 2015-2016 Alexander Yakovlev, https://oreolek.ru/
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

html/index.html

@@ -50,7 +50,7 @@
             <p>Written using <a href="http://undum.com" target="_blank">Undum</a> and <a href="http://sequitur.github.io/raconteur/" target="_blank">Raconteur</a>.</p>
           </div>
           <div id="footright">
-            <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/88x31.png" /></a>
+            <a href="./LICENSE.txt"><img src="img/mit.png" alt="This program is licensed under MIT license."></a>
           </div>
         </div>
       </div>

sass/main.scss

@@ -171,6 +171,7 @@ body {
     }
   }
   #footright {
+    text-align: right;
     @include make-col();
     @media (min-width: breakpoint-min(sm)) {
       @include make-col-span(2);