implement db.removeClient
add jrgm@mozilla.com to travis email notification
- be (redundantly) explicit about utf8 on tables, and set charset utf8 on the connection
- add method db.getEncodingInfo() and a script to show the values
Merge pull request #106 from jrgm/db_encoding

be (redundantly) explicit about utf8 on tables, and set charset utf8 on the connection

fixes #62