Update c3.min.js

c3.js

@@ -6979,13 +6979,31 @@
         return axis;
     }
 
-    // fix problems using c3 with phantomjs #578
-    Function.prototype.bind = Function.prototype.bind || function (thisp) {
-        var fn = this;
-        return function () {
-            return fn.apply(thisp, arguments);
-        };
-    };
+    // PhantomJS doesn't have support for Function.prototype.bind, which has caused confusion. Use
+    // this polyfill to avoid the confusion.
+    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind#Polyfill
+
+    if (!Function.prototype.bind) {
+      Function.prototype.bind = function(oThis) {
+        if (typeof this !== 'function') {
+          // closest thing possible to the ECMAScript 5
+          // internal IsCallable function
+          throw new TypeError('Function.prototype.bind - what is trying to be bound is not callable');
+        }
+
+        var aArgs   = Array.prototype.slice.call(arguments, 1),
+            fToBind = this,
+            fNOP    = function() {},
+            fBound  = function() {
+              return fToBind.apply(this instanceof fNOP ? this : oThis, aArgs.concat(Array.prototype.slice.call(arguments)));
+            };
+
+        fNOP.prototype = this.prototype;
+        fBound.prototype = new fNOP();
+
+        return fBound;
+      };
+    }
 
     if (typeof define === 'function' && define.amd) {
         define("c3", ["d3"], c3);