Remove TiltBrushExamples from the .unitypackage

- It no longer compiles with current versions of SteamVR
- Makes users think that TBT requires SteamVR, which it doesn't
- Tilt Brush Toollkit is not an appropriate place for educational
  materials on creating VR apps in Unity with SteamVR

Change-Id: Id000b01505e0e08b764bd64b3b228f84f5b142f5

UnitySDK/Assets/Editor/BuildPackage.cs

@@ -64,14 +64,13 @@ static string GetGitVersion() {
   [MenuItem("Tilt Brush/Build Package")]
   static void DoBuild() {
     string version = GetGitVersion();
-    string name = string.Format("../../tiltbrushtoolkit-UnitySDK-{0}.unitypackage", version);
+    string name = string.Format("../../tilt-brush-toolkit-UnitySDK-{0}.unitypackage", version);
 
     using (var tmp = new TempBuildStamp(version)) {
       AssetDatabase.ExportPackage(
           new string[] {
             "Assets/ThirdParty",
             "Assets/TiltBrush",
-            "Assets/TiltBrushExamples"
           },
           name,
           ExportPackageOptions.Recurse);