Create CHANGELOG.md

Closes #149

CHANGELOG.md

+<a name"0.1.35"></a>
+### 0.1.35 (2015-10-08)
+
+#### Features
+
+* Add enabled/disabled option for slider: `rz-slider-disabled="boolean"`
+
+
+<a name"0.1.34"></a>
+### 0.1.34 (2015-10-03)
+
+#### Features
+
+* Support ticks for range sliders and slider with always visible bars.
+
+
+<a name"0.1.33"></a>
+### 0.1.33 (2015-10-02)
+
+#### Features
+
+* Add a `rzSliderShowTicks` to show a tick on each step.
+* Add a `rzSliderShowTicksValue ` to show a tick and its value on each step.