Delete temp pid files
Added error handling
Space
Clarified comment
Merge pull request #17 from papertrail/13-no-blank-pid-files

No blank pid files
Reverted
Rename makefile to Makefile
Use the leonsodhi fork for lockfile for the fix

We need to treat empty files and files that could not be parsed as invalid pid
files so they are recreated.

While we're waiting for nightlyone/lockfile to be updated, we'll use
leonsodhi/lockfile with the fix.
Merge remote-tracking branch 'origin/revert-13-no-blank-pid-files' into lockfile-fix
Add leonsodhi/lockfile
Merge pull request #21 from papertrail/lockfile-fix

Use the leonsodhi fork for lockfile for the fix
Merge branch 'master' into import-from-r_s