README add howto's

- asrob-uc3m/robotDevastation#143
- asrob-uc3m/actas#148

README.md

@@ -9,3 +9,24 @@ Currently hosted at https://asrob-uc3m.gitbooks.io/robotDevastation-developer-ma
 ### If you have any doubts or comments
 1. Please check if you can find the answer through the corresponding file and/or folder in-source documentation, as well as in the [Issues](https://github.com/asrob-uc3m/robotDevastation-developer-manual/issues) section (both Open and Closed issues).
 2. If your doubt or comment is not a duplicate, please post a detailed [New issue](https://github.com/asrob-uc3m/robotDevastation-developer-manual/issues/new).
+
+### How-To's
+* [How to serve on localhost](#how-to-serve-on-localhost)
+* [How to upload changes to GitHub](#how-to-upload-changes-to-github)
+
+## How to serve on localhost
+It is useful to serve on `localhost` to modify the website and see changes locally.
+
+1. From the root of the project, run the following command (which is universal for all [Gitbook (legacy)](https://github.com/GitbookIO/gitbook)-based projects):
+```bash
+gitbook build && gitbook serve
+```
+
+2. You can now browse the site at the default location: http://127.0.0.1:4000
+
+## How to upload changes to GitHub
+This project is managed as any project on [GitHub](https://www.github.com). You may use [Git](https://git-scm.com) or even the GitHub web interface, both on which you can find many tutorials online. The following points are specific to the [Gitbook (legacy)](https://github.com/asrob-uc3m/actas/issues/148#issuecomment-449748350) mechanism used, and its [current settings](https://github.com/asrob-uc3m/robotDevastation-developer-manual/settings):
+
+1. Please **do not upload** the `_book/` folder. They are auto-generated locally, and the same should happen on the Gitbook (legacy) servers.
+
+2. It is safe to `git push` to any upstream branch, just remember that what is on `master` is what will be actually rendered as the website.