Update ico.js rename checkIfIsPNG to isPNG

Author: Kevin Bronstein

lib/manifestTools/manifestCreator/scrapers/icojs/src/ico.js

@@ -60,7 +60,7 @@ function createPng(index, buffer) {
  * @returns {Boolean} True if the image is PNG.
  */
 
-function checkIfIsPNG(index, buffer) {
+function isPNG(index, buffer) {
   var icoDv = new DataView(buffer);
   var startImage = icoDv.getUint32(18 + (index * 16), true);
   var bufferSlice = buf2hex(buffer.slice(startImage, startImage + 4))
@@ -113,7 +113,7 @@ var factory = function(config) {
       return Q.all(range(icoDv.getUint16(4, true))
               .map(function(i) {
 
-                if(checkIfIsPNG(i,buffer)){
+                if(isPNG(i,buffer)){
                   var deferred = Q.defer();
                   deferred.resolve(createPng(i,buffer));
                   return deferred.promise;