merge from master
readme portion of configure script.
check for empty values
Merge branch 'master' of https://github.com/OpenBazaar/OpenBazaar
Bug fix and refactor
Check for open port
Bug fixes

Not passing a transport to add_peer and added threading
Merge pull request #210 from sophron/database-encryption

Database encryption
Added pysqlcipher
some progress on backup tool (#218)
added notary warning
Merge pull request #221 from SamPatt/master

added notary warning
html unclosed tags on the header.
[HTML] replace ng- for data-ng html attributes, causing lots of unrecognized html attribute errors when validating the html
Include angular-routing
Comment out sections not usable in beta for now
Partials for each site section
Create new add_trusted_notary handler
Add trusted notary function in market class
Remove logging in notifier