prompt_for_tags should now read tag definitions from config; updated sample config
WIP config file location override option
Ignore .touchpaperrc if it should happen to be accidentally added...
Merge branch 'master' into feature/configurable-tags
Finalising configurable tags integration
Merge pull request #1 from BigglesZX/feature/configurable-tags

Merging feature: define common tag names in .touchpaperrc, prompt for input
Fixing merge
Finalising config file override option
Merge pull request #5 from BigglesZX/feature/override-config-location

New feature: command-line option to override location of config file
Bumping version
Merge branch 'master' into feature/tests
Refactoring argument parsing code
Adding some tests of highly questionable worth, mostly to learn my way round Nose