add build status badge
only write to file if it is open
Merge branch 'master' of github.com:jminardi/mecode
BUGFIX do not reopen file if it is already open
BUGFIX resolves issue #9
remove unused functions
add timeout to serial devices
remove unneeded calibration calculations
bump minor
Merge pull request #14 from jminardi/purge-calibration

Purge calibration
more cleaning
Merge branch 'master' of github.com:jminardi/mecode
fix merge conflict with master