Noissue - Enable test runner to run on Windows and add documentation

README.md

 Adblock Plus for Chrome, Opera, Microsoft Edge and Firefox
 ==========================================================
 
 This repository contains the platform-specific Adblock Plus source code for
 Chrome, Opera, Microsoft Edge and Firefox. It can be used to build
 Adblock Plus for these platforms, generic Adblock Plus code will be extracted
 from other repositories automatically (see _dependencies_ file).
 
 Note that the Firefox extension built from this repository is the new
 [WebExtension](https://developer.mozilla.org/en-US/Add-ons/WebExtensions).
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 extension's Options page, open the JavaScript Console and type in:
 
     location.href = "qunit/index.html";
 
 The unit tests will run automatically once the page loads.
 
 ### External test runner
 
 There is also an external test runner that can be invoked from the
 command line in order to run the unit tests along some integration
-tests on different browsers, and automatically runs the linter as well.
+tests on different browsers, and automatically run the linter as well.
 
 On Windows, in order to use the test runner, in addition to setting up a Linux
 environment as outlined above, you need to have Node.js installed in your native
 Windows environment. Then run the commands below from within PowerShell or
 cmd.exe (unlike when building the extension which needs to be done from Bash).
 
 Make sure the required packages are installed and up-to-date:
 
     npm install
 
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 You will need to setup first. This will install our configuration
 [eslint-config-eyeo](https://hg.adblockplus.org/codingtools/file/tip/eslint-config-eyeo)
 and everything needed after you run:
 
     npm install
 
 Then you can run to lint the code:
 
     npm run lint