Merge branch 'master' into 'master'

add readme, deaults for shapeshifter

See merge request !1

README.md

+Running a shapeshifter-dispatcher container in float
+---
+
+Chaperone, a small init, is used to launch shapeshifter dispatcher. It needs to have some variables:
+
+* RHOST: where traffic should go to, like the IP of where your OpenVPN server
+  listens on. If it's on the same host 127.0.0.1 would do.
+* RPORT: associated port of that OpenVPN server, 1194 by default
+* LHOST: listen on this IP 
+* OBFSPORT: your obfs4-exposed port
+* LOGLEVEL: ERROR/WARN/INFO/DEBUG
+* EXTORPORT: Specify the address of a server implementing the Extended OR Port protocol, which is used for per-connection metadata
+

chaperone.d/shapeshifter-dispatcher.conf

 shapeshifter-dispatcher.service: {
-     command: "/usr/local/bin/shapeshifter-dispatcher -transparent -server -state /srv/leap/shapeshifter-state -orport ${RHOST}:${RPORT} -transports obfs4 -bindaddr obfs4-${LHOST}:${OBFSPORT} -logLevel ${LOGLEVEL} -enableLogging -extorport ${RHOST}:${EXTORPORT}",
+     command: "/usr/local/bin/shapeshifter-dispatcher -transparent -server -state /srv/leap/shapeshifter-state -orport ${RHOST:127.0.0.1}:${RPORT:1194} -transports obfs4 -bindaddr obfs4-${LHOST:default(ip)}:${OBFSPORT:23042} -logLevel ${LOGLEVEL:WARN} -enableLogging -extorport ${RHOST:127.0.0.1}:${EXTORPORT:3334}",
      exit_kills: true
 }