Prevent double-loading when running "bundle exec rake"
Prevent double-loading when running "bundle exec rake"

The lib/abstract_method.rb file was required twice then running "bundle
exec rake":

  1. when processing abstract_method.gemspec
  2. when processing spec/spec_helper.rb

Because full path to the file wasn't specified in the second case, the
file wasn't detected as duplicate, was loaded twice and the following
warning was issued:

  warning: already initialized constant VERSION

This commit fixes the problem by specifying full path to
lib/abstract_method.rb in spec/spec_helper.rb.

openSUSE/abstract_method