New README

README.md

@@ -1,2 +1,18 @@
 # lichess-export
 Export your chess games from lichess.org
+
+# Installation
+Requires only Python (2 or 3) and `requests` with `gevent`:
+```
+pip install grequests
+```
+
+Also, on Linux if you want to export to Scid you need to install Scid: `sudo apt-get install scid`.
+
+# Using
+Example:
+```
+python lichess.py -n hippo23 -t pgn -o hippo23.pgn  --threads 6
+```
+If you want scid base: `python lichess.py -n hippo23 -t scid -o hippo23  --threads 6`
+If you have more than 1000 games, you can set` threads` more than `3`. If you have more than 10000 games, set` threads` to `10`