Add a README

README.md

+# Log
+
+Log (diglog + analog) is a graphical environment for entering circuit schematics, and for analog 
+and digital circuit simulation. Please see [log/README](log/README) for more information.
+
+This is a fork of a part of the [Chipmunk
+Distribution](https://john-lazzaro.github.io/chipmunk/pickup/pickup.html)
+last maintained by [John Lazzaro](https://github.com/john-lazzaro).
+
+This repo has for goal to get rid of old code and make the rest
+compliant with modern practices, protocols, frameworks and operating systems/architectures.
+
+Later on, we might add new features.
+
+## Compilation instructions
+
+### Dependencies
+
+For Debian :
+
+* `libx11-dev`
+* `build-essential`
+
+### On Linux systems
+
+You may need to use [this patch](https://ar1.se/GuO0RElRWT) on x86_64 archiectures or [this one](https://github.com/erebstock/diglog-install/blob/master/diglog32.patch) on i686 architectures.
+
+Then just type :
+
+```
+$ make
+```
+
+## Tests
+
+_Not yet implemented_
+
+## Static analysis
+
+_Not yet implemented_
+
+## Codestyle checks
+
+_Not yet implemented_
+
+## License
+
+```
+"DigLOG", the digital simulator for LOG.
+Copyright (C) 1985, 1990 David Gillespie.
+Author's address: daveg@synaptics.edu
+
+"AnaLOG", the analog simulator for LOG, 5.66
+Copyright (C) 1985, 1990 John Lazzaro.
+Author's address: lazzaro@cs.berkeley.edu; 
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation (any version).
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+```