Merge pull request #226 from Unity-Technologies/build/automation

Build automation

.gitignore

+artifacts/**
+build/**
 MaterialGraphProject/.vs
 MaterialGraphProject/.vscode
 MaterialGraphProject/Library

MaterialGraphProject/Assets/UnityShaderEditor/.npmignore

+artifacts/**
+build/**
+.npmignore

build.py

+#!/usr/bin/python -B
+import os
+import logging
+
+def packages_list():
+    return [
+        ("com.unity.shadergraph", os.path.join("MaterialGraphProject", "Assets", "UnityShaderEditor"))
+    ]
+
+# Prepare an empty project for editor tests
+def prepare_editor_test_project(repo_path, project_path, logger):
+    import unity_package_build
+    unity_package_build.copy_path_to_project(os.path.join("MaterialGraphProject", "Assets", "NewNodes"), repo_path, project_path, logger)
+    unity_package_build.copy_path_to_project(os.path.join("MaterialGraphProject", "Assets", "TestAssets"), repo_path, project_path, logger)
+    unity_package_build.copy_path_to_project(os.path.join("MaterialGraphProject", "Assets", "UnityShaderEditor", "Editor", "Testing"), repo_path, project_path, logger)
+
+if __name__ == "__main__":
+    import sys
+    sys.path.insert(0, os.path.abspath(os.path.join("..", "automation-tools")))
+    
+    try:
+        import unity_package_build
+        build_log = unity_package_build.setup()
+    except ImportError:
+        print "No Automation Tools found."