Change 'bundle' command to 'bundle install'

[stillhart]

There's an implicit run of bundle which is deprecated now. bundle install should be used.

Maybe even bundle install --quiet for less noise.

bundle exec bump patch --tag -m 'bump 1234'
          In a future version of Bundler, running `bundle` without argument will no longer run `bundle install`.
          Instead, the `cli_help` command will be displayed. Please use `bundle install` explicitly for scripts like CI/CD.
          You can use the future behavior now with `bundle config set default_cli_command cli_help --global`,
          or you can continue to use the current behavior with `bundle config set default_cli_command install_or_cli_help --global`.
          This message will be removed after a default_cli_command value is set.
Fetching gem metadata from https://
Resolving dependencies...
Using x 1.2.3 (was 1.2.2) from gemspec at `.` and installing its executables
Bundle complete! 1234 Gemfile dependencies, 1234 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.

[grosser]

@gregorym can you run rake release, already bumped to 0.10.1