Added Pinterest (Fixes #35)

Author: lipis

bootstrap-social.css

@@ -104,6 +104,7 @@
 .btn-linkedin      { .btn-social(#007bb6); }
 .btn-microsoft     { .btn-social(#2672ec); }
 .btn-openid        { .btn-social(#f7931e); }
+.btn-pinterest     { .btn-social(#cb2027); }
 .btn-reddit        { .btn-social(#eff7ff, #000); }
 .btn-soundcloud    { .btn-social(#ff5500); }
 .btn-tumblr        { .btn-social(#2c4762); }

bootstrap-social.less

@@ -104,6 +104,7 @@ $bs-height-xs:   (floor($font-size-small * 1.2) + $padding-small-vertical + 1);
 .btn-linkedin      { @include btn-social(#007bb6); }
 .btn-microsoft     { @include btn-social(#2672ec); }
 .btn-openid        { @include btn-social(#f7931e); }
+.btn-pinterest     { @include btn-social(#cb2027); }
 .btn-reddit        { @include btn-social(#eff7ff, #000); }
 .btn-soundcloud    { @include btn-social(#ff5500); }
 .btn-tumblr        { @include btn-social(#2c4762); }

bootstrap-social.scss

@@ -89,6 +89,9 @@ <h3>The Buttons</h3>
           <a class="btn btn-block btn-social btn-openid" onclick="_gaq.push(['_trackEvent', 'btn-social', 'click', 'btn-openid']);">
             <i class="fa fa-openid"></i> Sign in with OpenID
           </a>
+          <a class="btn btn-block btn-social btn-pinterest" onclick="_gaq.push(['_trackEvent', 'btn-social', 'click', 'btn-pinterest']);">
+            <i class="fa fa-pinterest"></i> Sign in with Pinterest
+          </a>
           <a class="btn btn-block btn-social btn-reddit" onclick="_gaq.push(['_trackEvent', 'btn-social', 'click', 'btn-reddit']);">
             <i class="fa fa-reddit"></i> Sign in with Reddit
           </a>
@@ -126,6 +129,7 @@ <h3>The Buttons</h3>
             <a class="btn btn-social-icon btn-linkedin" onclick="_gaq.push(['_trackEvent', 'btn-social-icon', 'click', 'btn-linkedin']);"><i class="fa fa-linkedin"></i></a>
             <a class="btn btn-social-icon btn-microsoft" onclick="_gaq.push(['_trackEvent', 'btn-social-icon', 'click', 'btn-microsoft']);"><i class="fa fa-windows"></i></a>
             <a class="btn btn-social-icon btn-openid" onclick="_gaq.push(['_trackEvent', 'btn-social-icon', 'click', 'btn-openid']);"><i class="fa fa-openid"></i></a>
+            <a class="btn btn-social-icon btn-pinterest" onclick="_gaq.push(['_trackEvent', 'btn-social-icon', 'click', 'btn-pinterest']);"><i class="fa fa-pinterest"></i></a>
             <a class="btn btn-social-icon btn-reddit" onclick="_gaq.push(['_trackEvent', 'btn-social-icon', 'click', 'btn-reddit']);"><i class="fa fa-reddit"></i></a>
             <a class="btn btn-social-icon btn-soundcloud" onclick="_gaq.push(['_trackEvent', 'btn-social-icon', 'click', 'btn-soundcloud']);"><i class="fa fa-soundcloud"></i></a>
             <a class="btn btn-social-icon btn-tumblr" onclick="_gaq.push(['_trackEvent', 'btn-social-icon', 'click', 'btn-tumblr']);"><i class="fa fa-tumblr"></i></a>
@@ -151,6 +155,7 @@ <h3>Available Classes</h3>
             <li data-code="linkedin" data-name="LinkedIn"><code>btn-linkedin</code> <span class="social-hex">#007BB6</span></li>
             <li data-code="microsoft" data-icon="windows" data-name="Microsoft"><code>btn-microsoft</code> <span class="social-hex">#2672EC</span></li>
             <li data-code="openid" data-name="OpenID"><code>btn-openid</code> <span class="social-hex">#F7931E</span></li>
+            <li data-code="pinterest" data-name="Pinterest"><code>btn-pinterest</code> <span class="social-hex">#CB2027</span></li>
             <li data-code="reddit" data-name="Reddit"><code>btn-reddit</code> <span class="social-hex">#EFF7FF</span></li>
             <li data-code="soundcloud" data-name="SoundCloud"><code>btn-soundcloud</code> <span class="social-hex">#FF5500</span></li>
             <li data-code="tumblr" data-name="Tumblr"><code>btn-tumblr</code> <span class="social-hex">#CB2027</span></li>