* moved basic exercise to new run script
* forgot some files
* CLI output now goes to logs
* typo, and forgot topo file
* fixed net.stop() bug
* added temporary change to makefile
* typos hard
* Adding initial implementation of basic_encap example
* Updated basic_encap example to count the number of valid packets
* Updated basic_encap example to put encapsulation layer after Ethernet
header.
* Added solution file for basic_encap example
* Changed the name of the basic_encap example to basic_tunnel and called
the new header myTunnel. Also changed the myTunnel field names slightly.
