Implemented Gemini screenshot testing base

scripts/build

@@ -28,4 +28,4 @@ if [[ ! -d `npm bin` ]]; then
 fi
 
 # Run command
-`npm bin`/gulp build --clean --optimize --revision
+`npm bin`/gulp build --clean --optimize --revision $@

scripts/clean

@@ -28,4 +28,4 @@ if [[ ! -d `npm bin` ]]; then
 fi
 
 # Run command
-`npm bin`/gulp clean
+`npm bin`/gulp clean $@

scripts/start

@@ -28,4 +28,4 @@ if [[ ! -d `npm bin` ]]; then
 fi
 
 # Run command
-`npm bin`/gulp watch --no-lint
+`npm bin`/gulp watch --no-lint $@

scripts/test/visual/run

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# Copyright (c) 2016-2017 Martin Donath <martin.donath@squidfunk.com>
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+# Check if "npm install" was executed
+if [[ ! -d `npm bin` ]]; then
+  echo "\"node_modules\" not found:"
+  echo "npm install"
+  exit 1
+fi
+
+# Run command
+`npm bin`/gulp tests:visual:run --clean --optimize --revision $@

scripts/test/visual/update

@@ -28,4 +28,4 @@ if [[ ! -d `npm bin` ]]; then
 fi
 
 # Run command
-`npm bin`/gulp test
+`npm bin`/gulp tests:visual:update $@