Android split cookies only on first instance of = (#31)

Currently the cookie string (e.g. cookieName=value) will be split on every instance of = and only the first two items will be used.  This adds support for cookies with '=' in their value.

Author: sdg9

android/src/main/java/com/psykar/cookiemanager/CookieManagerModule.java

@@ -62,7 +62,7 @@ public void get(String url, Callback callback) throws URISyntaxException, IOExce
         if (cookieList != null) {
             String[] cookies = cookieList.get(0).split(";");
             for (int i = 0; i < cookies.length; i++) {
-                String[] cookie = cookies[i].split("=");
+                String[] cookie = cookies[i].split("=", 2);
                 if(cookie.length > 1) {
                   map.putString(cookie[0].trim(), cookie[1]);
                 }