Added support for plugins

pshell.properties

@@ -0,0 +1,16 @@
+#Thu Dec 04 18:06:51 CET 2014
+dataPath={home}/data
+logPath={home}/log
+logLevel=Info
+libraryPath={script}; {script}/site-packages
+scriptPath={home}/script
+serverPort=-1
+contextPath={home}/context
+logDaysToLive=-1
+devicePoolFile={devices}/devices.properties
+homePath=./home
+deviceUpdateStrategyFile={devices}/update.properties
+devicesPath={home}/devices
+test=false
+sessionsPath={home}/sessions
+scriptType=py