Add license

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018-present The Palmer Group
+
+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 NONINFRINGEMENT. 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.

src/command.js

@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) 2018-present The Palmer Group
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 import kebabCase from 'lodash.kebabcase';
 
 const screenshotsFolder = Cypress.config('screenshotsFolder');
@@ -31,8 +38,7 @@ export function matchImageSnapshotCommand(defaultOptions) {
         const differencePercentage = diffRatio * 100;
         if (!pass && !added && !updated) {
           throw new Error(
-            `Expected image to match or be a close match to snapshot but was ${differencePercentage}% different from snapshot (${diffPixelCount} differing pixels).\n` +
-              `See diff for details: ${diffOutputPath}`
+            `Screenshot was ${differencePercentage}% different from saved snapshot with ${diffPixelCount} different pixels.\n  See diff for details: ${diffOutputPath}`
           );
         }
       }

src/plugin.js

@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) 2018-present The Palmer Group
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 const fs = require('fs');
 const path = require('path');
 const childProcess = require('child_process');