Update merge (trekhleb#3)

Author: tstillwell

.gitignore

@@ -2,3 +2,4 @@ node_modules
 .idea
 coverage
 .vscode
+.DS_Store

README.md

@@ -1,5 +1,23 @@
 module.exports = {
+  // The bail config option can be used here to have Jest stop running tests after
+  // the first failure.
+  bail: false,
+
+  // Indicates whether each individual test should be reported during the run.
   verbose: false,
+
+  // Indicates whether the coverage information should be collected while executing the test
   collectCoverage: false,
+
+  // The directory where Jest should output its coverage files.
   coverageDirectory: './coverage/',
+
+  // If the test path matches any of the patterns, it will be skipped.
+  testPathIgnorePatterns: ['<rootDir>/node_modules/'],
+
+  // If the file path matches any of the patterns, coverage information will be skipped.
+  coveragePathIgnorePatterns: ['<rootDir>/node_modules/'],
+
+  // The pattern Jest uses to detect test files.
+  testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.jsx?$',
 };