fixed ngModel binding issue in select component and update documentat…

…ion of colorpicker component.

src/components/colorpicker/README.md

@@ -8,10 +8,23 @@ Example:
 
  ```html
 //HTML
+
+<input [(colorpicker)]="color"
+       position="right"
+       offset="0"
+       format="hex"
+       [style.background]="color"
+       [value]="color"
+       (change)="change($event)" />
+
+//--- or ---
+
 <div [(colorpicker)]="color"
      position="right"
      offset="0"
-     format="hex">
+     format="hex"
+     [style.background]="color"
+     (change)="change($event)">
 </div>
  ```
  ```ts
@@ -32,6 +45,10 @@ export class ... {
 
     private color: string = "#123456";
 
+    private change(value) { 
+      ...
+    }
+
     ...
 
 }

src/components/select/select.ts

@@ -132,12 +132,43 @@ export class Md2Select implements AfterContentInit, AfterContentChecked, Control
   }
 
   ngAfterContentChecked() {
-    let opt = this._options.filter(o => o.value == this.value)[0];
+    let opt = this._options.filter((o) => {
+      //let o1 = o.value, o2 = this.value;
+      //if (o.value == this.value) return true;
+      //if (o1 === null || o2 === null) return false;
+      //if (o1 !== o1 && o2 !== o2) return true;
+      //let t1 = typeof o1, t2 = typeof o2;
+      //if (t1 === t2 && t1 === 'object') {
+      //  if (JSON.stringify(o1) === JSON.stringify(o2)) return true;
+      //  else return false;
+      //}
+      //return false;
+      return this.equals(o.value, this.value);
+    })[0];
     if (opt) {
       this.selectedValue = document.getElementById(opt.id).innerHTML;
     }
   }
 
+  private equals(o1, o2) {
+    if (o1 === o2) return true;
+    if (o1 === null || o2 === null) return false;
+    if (o1 !== o1 && o2 !== o2) return true;
+    let t1 = typeof o1, t2 = typeof o2, length, key, keySet;
+    if (t1 === t2 && t1 === 'object') {
+      keySet = Object.create(null);
+      for (key in o1) {
+        if (!this.equals(o1[key], o2[key])) return false;
+        keySet[key] = true;
+      }
+      for (key in o2) {
+        if (!(key in keySet) && key.charAt(0) !== '$' && o2[key]) return false;
+      }
+      return true;
+    }
+    return false;
+  }
+
   @HostListener('click', ['$event'])
   public onClick(e: any) {
     if (this.disabled) {