Merge branch 'release0.3.6' into develop
Build shared library (libtrema.so).
Add .feature for switch_ready handler. Thanks Nick-san for his review and comments. (refs #247)
Merge branch 'develop' of https://github.com/trema/trema into develop
Add 'trema port_down' command. See features/trema_commands/port_down.feature for its usage and details (refs #253)
Version bump to 0.3.7
Merge branch 'release0.3.7'