Change buffer methods name to camelCase

src/arc.js

@@ -299,8 +299,8 @@ c3_chart_internal_fn.redrawArc = function (duration, durationForExit, withTransf
         .style("opacity", $$.hasType('donut') || $$.hasType('gauge') ? 1 : 0);
 
     if(($$.config.hasSubs || $$.config.isSub)){
-        $$.buffer.onlastfinish("draw-lines"+$$.config.isSub, function(){
-            $$.buffer.onlastfinish("draw-lines"+$$.config.isSub, function(){
+        $$.buffer.onLastFinish("draw-lines"+$$.config.isSub, function(){
+            $$.buffer.onLastFinish("draw-lines"+$$.config.isSub, function(){
                 $$.ed3Internal.redrawLinesOnBoth();
                 $$.ed3Internal.redrawLinesOnBoth();
             });

src/axis.js

@@ -415,8 +415,8 @@ c3_chart_internal_fn.tuneAxis = function(sync, callback){
     if(sync){
         apply();
     } else {
-        $$.buffer.onlastfinish("tune-axis" + $$.config.isSub, apply);
-        $$.buffer.onlastfinish("cached-redraw" + $$.config.isSub, function(){});
+        $$.buffer.onLastFinish("tune-axis" + $$.config.isSub, apply);
+        $$.buffer.onLastFinish("cached-redraw" + $$.config.isSub, function(){});
     }
 
 };

src/buffer.js

@@ -130,10 +130,10 @@ Buffer.prototype.finishAll = function(){
 
 /**
  * Adds callback to main queue and starts timer
- * @function onfinish 
+ * @function onFinish 
  * @param {Function} callback
  */
-Buffer.prototype.onfinish = function(callback){
+Buffer.prototype.onFinish = function(callback){
     var self = this;
     self.start();
     self.callbacks.push(callback);
@@ -141,11 +141,11 @@ Buffer.prototype.onfinish = function(callback){
 
 /**
  * Adds named callback to queue and starts timer. Only last callback with given id will be called
- * @function onlastfinish
+ * @function onLastFinish
  * @param {String} id of callback
  * @param {Function} callback
  */
-Buffer.prototype.onlastfinish = function(id, callback){
+Buffer.prototype.onLastFinish = function(id, callback){
     var self = this;
     self.start();
     self.namedCallbacks[id] = callback;
@@ -156,7 +156,7 @@ Buffer.prototype.onlastfinish = function(id, callback){
  * @function afterFinish
  * @param {Function} callback
  */
-Buffer.prototype.afterfinish = function(callback){
+Buffer.prototype.afterFinish = function(callback){
     var self = this;
     self.start();
     self.lastCallbacks.push(callback);

src/callbacks.js

@@ -40,7 +40,7 @@ c3.chart.internal.fn.cachedRedraw = function(options, callback){
 
     if($$.config.shouldCache){
         if(!$$.buffer.has("tune-axis" + $$.config.isSub)){
-            $$.buffer.onlastfinish("cached-redraw" + $$.config.isSub,
+            $$.buffer.onLastFinish("cached-redraw" + $$.config.isSub,
                 function(){
                     $$.resolveDraw(options);
                 }