merged "Prerequisites" and "Install" chapters

cli/README.MD

@@ -4,25 +4,22 @@
 
 SingleFile can be launched from the command line by running it into a (headless) browser. It runs through Node.js as a standalone script injected into the web page instead of being embedded into a WebExtension. To connect to the browser, it can use [Puppeteer](https://github.com/GoogleChrome/puppeteer) or [Selenium WebDriver](https://www.npmjs.com/package/selenium-webdriver). Alternatively, it can also emulate a browser with JavaScript disabled by using [jsdom](https://github.com/jsdom/jsdom).
 
+You can also convert MAFF pages to HTML. For this, you must use specific versions of SingleFile CLI and Firefox. See here for more info: https://github.com/gildas-lormeau/SingleFile/blob/master/maff2html/README.MD.
+
 This is a **work in progress**.
 
 ## Run SingleFile
 
-### Prerequisites
+### Install
 
-- [Node.js](https://nodejs.org) must be installed. 
-- By default SingleFile will use Puppeteer to connect to [Chrome/Chromium](https://www.google.com/chrome/). With Puppeteer, Chrome/Chromium must also be installed. 
-- With Selenium WebDriver, you can use [Firefox](https://www.mozilla.org/en/firefox/new/) or Chrome/Chromium. At least one of them must be installed. 
-- If you use [Selenium WebDriver](https://www.npmjs.com/package/selenium-webdriver) instead of Puppeteer, you only need to download the component (e.g. `geckodriver` or `chromedriver`) for your browser and ensure it can be found through the `PATH` environment variable or the `cli` folder. Otherwise you will need to set the `--web-driver-executable-path` option to help SingleFile locating the binary file.
-- It is recommended that the browser binaries can be found through the `PATH` environment variable or the `cli` folder. Otherwise you will need to set the `--browser-executable-path` option to help SingleFile locating the binary file.
- - You can also convert MAFF pages to HTML. For this, you must use specific versions of SingleFile CLI and Firefox. See here for more info: https://github.com/gildas-lormeau/SingleFile/blob/master/maff2html/README.MD.
+- Make sure Chrome or Firefox is installed and the executable can be found through the `PATH` environment variable. Otherwise you will need to set the `--browser-executable-path` option to help SingleFile locating it.
 
-### Install
+- Install [Node.js](https://nodejs.org)
 
 - Unzip the [master archive](https://github.com/gildas-lormeau/SingleFile/archive/master.zip) somewhere on your disk in an empty folder.
 
   `$ unzip master.zip .`
-  
+
 - Go into the `cli` directory.
 
   `$ cd cli`
@@ -35,6 +32,8 @@ This is a **work in progress**.
 
   `$ chmod +x single-file`
 
+- To use Firefox instead of Chrome, you must download the [Selenium WebDriver](https://www.npmjs.com/package/selenium-webdriver) component (i.e. `geckodriver` for Firefox).  Make sure it can be found through the `PATH` environment variable or the `cli` folder. Otherwise you will need to set the `--web-driver-executable-path` option to help SingleFile locating the executable.
+
 ### Run
 
 - Syntax

maff2html/README.MD

@@ -6,19 +6,18 @@ SingleFile can be launched from the command line to convert MAFF files into HTML
 
 ## Convert MAFF to HTML
 
-### Prerequisites
+### Install
 
-- [Node.js](https://nodejs.org) must be installed. 
-- You must also install [Firefox version 56.0.2](https://ftp.mozilla.org/pub/firefox/releases/56.0.2/) and [Mozilla geckodriver version 0.20.1](https://github.com/mozilla/geckodriver/releases/tag/v0.20.1).
-- It is recommended that the Firefox binary can be found through the `PATH` environment variable or the `maff2html` folder. Otherwise you will need to set the `--browser-executable-path` option..
-- It is also recommended that the Mozilla geckodriver binary can be found through the `PATH` environment variable or the `maff2html` folder. Otherwise you will need to set the `--web-driver-executable-path` option.
+- Install [Firefox version 56.0.2](https://ftp.mozilla.org/pub/firefox/releases/56.0.2/)
 
-### Install
+- Make sure the executable of Firefox can be found through the `PATH` environment variable. Otherwise you will need to set the `--browser-executable-path` option to help SingleFile locating it.
+
+- Install [Node.js](https://nodejs.org)
 
 - Unzip the [master archive](https://github.com/gildas-lormeau/SingleFile/archive/master.zip) somewhere on your disk in an empty folder.
 
   `$ unzip master.zip .`
-  
+
 - Go into the `maff2html` directory.
 
   `$ cd maff2html`
@@ -31,6 +30,8 @@ SingleFile can be launched from the command line to convert MAFF files into HTML
 
   `$ chmod +x single-file`
 
+- Download the [Mozilla geckodriver version 0.20.1](https://github.com/mozilla/geckodriver/releases/tag/v0.20.1) component.  Make sure it can be found through the `PATH` environment variable or the `maff2html` folder. Otherwise you will need to set the `--web-driver-executable-path` option to help SingleFile locating the executable.
+
 ### Run
 
 - Syntax