New demo app launcher icon and colors (#345)

* New demo app launcher icon and colors

* Updated places & sdk icons

* rounded sdk sample app icon

Author: ecgreb

samples/mapzen-android-sdk-sample/src/main/res/mipmap-hdpi/ic_launcher.png

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-  <color name="colorPrimary">#D4645C</color>
-  <color name="colorPrimaryDark">#66D4645C</color>
-  <color name="colorAccent">#6D9FA3</color>
+  <color name="colorPrimary">#635378</color>
+  <color name="colorPrimaryDark">#1e0e33</color>
+  <color name="colorAccent">#ff7b7b</color>
 </resources>