feat(process): prevent hoodie-server from crashing

when started twice, but rather log that the process is already running.
chore(appveyor): remove config file as tho it passes tests successfully it is not able to complete the test suite, please retry in a separate branch @acconut
Merge pull request #138 from hoodiehq/run-check

feat(process): prevent hoodie-server from crashing
chore(release): v0.5.3
Merge branch 'master' into npm-dir-hotfix
fix(template): adds helpers and fixes

 installation from template