added waitConnected attribute to mininet class
improved waitConnected algorithm and set default wait time to wait forever
added documentation for waitConnected timeout
conforming to style, and fixing documentation
added waitConnect to linearbandwidth example.
fixed waitConnected performance and moved waitConnected call to mn.start
fixed linearbandwidth and waitconnected
fixed last commit
Merge pull request #325 from cdburkard/patches/userspace_connect

added waitConnected attribute to mininet class