Minor text fixes

Author: iveysaur

src/components/slider/slider.html

@@ -2,7 +2,7 @@
   <div class="md-slider-container"
        [class.md-slider-sliding]="isSliding"
        [class.md-slider-active]="isActive"
-       [class.md-slider-thumb-label-showing]="_thumbLabel">
+       [class.md-slider-thumb-label-showing]="thumbLabel">
     <div class="md-slider-track-container">
       <div class="md-slider-track"></div>
       <div class="md-slider-track md-slider-track-fill"></div>

src/components/slider/slider.spec.ts

@@ -27,7 +27,7 @@ describe('MdSlider', () => {
         SliderWithStep,
         SliderWithAutoTickInterval,
         SliderWithSetTickInterval,
-        SliderWithThumbLabel
+        SliderWithThumbLabel,
       ],
     });
 
@@ -548,11 +548,11 @@ describe('MdSlider', () => {
     it('should update the thumb label text on click', () => {
       expect(thumbLabelTextElement.textContent).toBe('0');
 
-      dispatchClickEvent(sliderTrackElement, 0.49);
+      dispatchClickEvent(sliderTrackElement, 0.13);
       fixture.detectChanges();
 
       // The thumb label text is set to the slider's value. These should always be the same.
-      expect(thumbLabelTextElement.textContent).toBe(`${sliderInstance.value}`);
+      expect(thumbLabelTextElement.textContent).toBe('13');
     });
 
     it('should update the thumb label text on slide', () => {

src/components/slider/slider.ts

@@ -50,7 +50,7 @@ export class MdSlider implements AfterContentInit {
   /** Whether or not to show the thumb label. */
   @Input('thumb-label')
   @BooleanFieldValue()
-  private _thumbLabel: boolean = false;
+  thumbLabel: boolean = false;
 
   /** The miniumum value that the slider can have. */
   private _min: number = 0;