added reference to solidParticle.js file in gulp-config

Tools/Gulp/config.json

@@ -75,6 +75,7 @@
       "../../src/Layer/babylon.layer.js",
       "../../src/Particles/babylon.particle.js",
       "../../src/Particles/babylon.particleSystem.js",
+      "../../src/Particles/babylon.solidParticle.js",
       "../../src/Particles/babylon.solidParticleSystem.js",
       "../../src/Animations/babylon.animation.js",
       "../../src/Animations/babylon.animatable.js",

src/Particles/babylon.solidParticleSystem.ts

@@ -0,0 +1,6 @@
+module BABYLON {
+
+    export class SolidParticleSystem implements IDisposable {
+
+    }
+}