Added translation for share buttons

layouts/partials/share.html

@@ -1,9 +1,9 @@
-<a class="twitter" href="https://twitter.com/intent/tweet?text={{ .Site.BaseURL }}{{ .Permalink }} - {{ .Title }} {{ with .Site.Params.twitter }}by @{{ . }}{{ end }}"><span class="icon-twitter"> Tweet</span></a>
+<a class="twitter" href="https://twitter.com/intent/tweet?text={{ .Site.BaseURL }}{{ .Permalink }} - {{ .Title }} {{ with .Site.Params.twitter }}by @{{ . }}{{ end }}"><span class="icon-twitter"> {{ with .Site.Params.tweet }}{{ . }}{{ else }}Tweet{{ end }}</span></a>
 
 <a class="facebook" href="#" onclick="
     window.open(
       'https://www.facebook.com/sharer/sharer.php?u='+encodeURIComponent(location.href),
       'facebook-share-dialog',
       'width=626,height=436');
-    return false;"><span class="icon-facebook-rect"> Share</span>
+    return false;"><span class="icon-facebook-rect"> {{ with .Site.Params.share }}{{ . }}{{ else }}Share{{ end }}</span>
 </a>