[enh] add system libs requirement and command line options in README.md

README.md

@@ -17,7 +17,6 @@ Python3 and PyQt5 Client for [duniter](http://www.duniter.org) project.
   * Accounts management
   * Communities viewing
   * Money Transfer
-  * cx_freeze deployment
   * Wallets management
   * Contacts management
   * Joining a community, publishing keys
@@ -31,6 +30,14 @@ Python3 and PyQt5 Client for [duniter](http://www.duniter.org) project.
 
   * General tips : use pyenv to build sakia, as described in the [wiki](https://github.com/duniter/sakia/wiki/Cutecoin-install-for-developpers)
 
+  Building python 3 with pyenv requires libraries of `openssl` and `sqlite3`. On Ubuntu, install it using the following commands : 
+
+```
+apt-get update
+apt-get install libssl-dev
+apt-get install libsqlite3-dev
+```
+
 ### Wheel Build scripts
   * Install __wheel__ with `pip install wheel`
   * Run `python3 gen_resources.py` in sakia folder
@@ -53,6 +60,12 @@ Python3 and PyQt5 Client for [duniter](http://www.duniter.org) project.
   * Unzip and start "sakia" :)
   * Join our beta community by contacting us on [duniter forum](http://forum.duniter.org/)
 
+## Command line options
+
+`-d` to display log to debug
+
+`--currency g1-test` to connect to the g1-test currency network.
+
 ## Development
 * When writing docstrings, use the reStructuredText format recommended by https://www.python.org/dev/peps/pep-0287/#docstring-significant-features
 * Use make commands to check the code and the format it correct.