Added flag to set config path for  sheave

--confPath flag now allows the path to 'sheave.conf' config file to be
set at runtime.  Primarily for Dockerization friendliness.
Attempting to get Dockerfile installing dictionary for Anagrams.
Docker instance of Sheavebot now functional!

Added flag to sheave instance to set a custom path for word list which
is now being added to the docker image.