added a configuration class and configuration parser
Made obfs-flash-client able to combine any number of transports together

fixed a minor bug with sending TOR_PT_SERVER_TRANSPORT_OPTIONS when it was empty and tested chaining lots of transports together on the server side.
Added reading launch options from config file. Added launching a pair of pluggable transports from launch options. Rewrote obfs_flash to use the launch options. Added example configuration file.

added a comment