Add README.md with contrib, how to build lektor, bug report instructions

close https://dip.torproject.org/web/tpo/issues/38

README.md

+# Tor Project Website
+
+This is the repository of Tor Project website. The current online version of this portal can be found at [https://torproject.org](https://torproject.org) or [Tor Project Onion Service](http://expyuzz4wqqyqhjn.onion/).
+
+To clone the code use either of
+
+```git clone https://git.torproject.org/project/web/tpo.git/```
+
+```torify git clone http://dccbbv6cooddgcrq.onion/project/web/tpo.git/```
+
+or browse it [online](http://gitweb.torproject.org/project/web/tpo.git).
+
+## How to report bugs or feedback
+
+First check if your issue wasn't already opened in [dip.torproject.org](https://dip.torproject.org/web/tpo/issues), then file a [trac ticket](https://trac.torproject.org/projects/tor/newticket) and choose the component: Webpages/Website.
+
+
+## What is Lektor
+
+[Lektor](https://www.getlektor.com/) is a framework to generate and serve websites from Markdown files.
+
+Its code can be found at [GitHub](https://github.com/lektor/lektor).
+
+## How to contribute
+
+### (Easy) Edit this page button
+
+You can click ```Edit this page``` and submit your content changes in a [Pull Request in GitHub](https://github.com/torproject/community/pulls).
+
+### (Advanced) Compiling a local version of the website
+
+1. Download and install Lektor: https://www.getlektor.com/downloads/
+
+2. Install the lektor-i18n plugin and its [dependencies](https://github.com/numericube/lektor-i18n-plugin#prerequisites).
+
+3. Clone the repository:
+
+```git clone https://git.torproject.org/project/web/tpo.git```
+
+4. Init the building blocks submodule:
+
+```$ cd lego && git submodule update --init --recursive```
+
+5. Translations for the website are imported by Jenkins when bulding the page, but if you want to test them, download the correct branch of the translations repo to the ./i18n/ folder.
+
+6. Finally
+
+To run a local continuous builder: ```$ lektor server```
+
+To just build the website once: ```$ lektor build -O <folder>```
+
+#### How to develop on the website
+
+Check our [wiki pages](https://dip.torproject.org/web/community/wikis/How-to-develop-on-the-website).
+
+### Translations
+
+To help us to translate, please join the Tor Project team in [Transifex](https://www.transifex.com/).
+
+
+### Getting help
+
+If you want to contribute to the Tor Project website, we will be happy to help you. Join us at #tor-www in [irc.oftc.net](https://www.oftc.net).