Add rant posting

Author: LucaScorpion

src/main/java/com/scorpiac/javarant/DevRant.java

@@ -289,6 +289,20 @@ public boolean voteComment(int id, Vote vote) {
         return Util.jsonSuccess(post(url, new BasicNameValuePair("vote", String.valueOf(vote.getValue()))));
     }
 
+    /**
+     * Post a rant.
+     *
+     * @param rant The content of the rant.
+     * @param tags The tags.
+     * @return Whether posting the rant was successful.
+     */
+    public boolean postRant(String rant, String tags) {
+        return Util.jsonSuccess(post(API_RANTS,
+                new BasicNameValuePair("rant", rant),
+                new BasicNameValuePair("tags", tags)
+        ));
+    }
+
     /**
      * Make a POST-request to the devRant server.
      *