Make Model::Shot quack more like a number.
Use Aisling's data to generate better tests for 10m air rifle.
Point to https rubygems and upgrade gems.
10m air rifle targets are inward gauging.
Clean up spec/shooting_stats/shooting_stats_spec.rb
Do less work in the constructor.
help_message is an instance method, not a class method.
Split out the target reading code into its own gem

Rather than trying to do both the analysis and target file reading in
the same codebase, this project is just for extracting data from
electronic target data files.
Remove Gemfile.lock, this is a library.
Ignore test coverage droppings.
Add Travis config