Bump major version to 2 for all packages

com.unity.render-pipelines.core/package.json

 {
     "name": "com.unity.render-pipelines.core",
     "description": "Core library for Unity render pipelines.",
-    "version": "0.1.33",
+    "version": "2.0.0-preview",
-        "com.unity.postprocessing": "2.0.2-preview"
+        "com.unity.postprocessing": "2.0.6-preview"
     }
 }

com.unity.render-pipelines.high-definition/package.json

 {
     "name": "com.unity.render-pipelines.high-definition",
     "description": "HD Render Pipeline for Unity.",
-    "version": "0.1.33",
+    "version": "2.0.0-preview",
-        "com.unity.postprocessing": "2.0.2-preview",
-        "com.unity.render-pipelines.core": "0.1.33"
+        "com.unity.postprocessing": "2.0.6-preview",
+        "com.unity.render-pipelines.core": "2.0.0-preview",
+        "com.unity.shadergraph": "2.0.0-preview"
     }
 }

com.unity.render-pipelines.lightweight/package.json

 {
     "name": "com.unity.render-pipelines.lightweight",
     "description": "Lightweight Render Pipeline for Unity.",
-    "version": "0.1.33",
+    "version": "2.0.0-preview",
-        "com.unity.postprocessing": "2.0.2-preview",
-        "com.unity.render-pipelines.core": "0.1.33",
-        "com.unity.shadergraph": "0.1.19"
+        "com.unity.postprocessing": "2.0.6-preview",
+        "com.unity.render-pipelines.core": "2.0.0-preview",
+        "com.unity.shadergraph": "2.0.0-preview"
     }
 }

com.unity.shadergraph/package.json

 {
     "name": "com.unity.shadergraph",
     "description": "Shader Graph",
-    "version": "0.1.19",
+    "version": "2.0.0-preview",
     "unity": "2018.2",
     "displayName": "Shader Graph",
     "dependencies": {

package.json

-{
-	"name": "com.unity.render-pipelines",
-	"version": "0.1.6",
-	"unity": "2018.1",
-	"description": "Render pipelines using SRP",
-	"dependencies": {
-    	"com.unity.postprocessing": "2.0.2-preview"
-	}
-}