Require processors in application.rb
Rename run_spec to application_spec

It describes TermApp::Application now.
Move termapp/run.rb to bin/term

bin/term is now executable.

Fix #50
Update README.md
Merge pull request #53 from yous/patch-run

Move termapp/run.rb to bin/term
Prefer `subject` over an instance variable
Use built in `respond_to` matcher
Use one-liner syntax `is_expected`

Equivalent to `expect(subject)`.
https://www.relishapp.com/rspec/rspec-core/v/3-0/docs/subject/one-liner-syntax
Pass multiple methods to `respond_to`
Make `termapp_helper.rb` a module `TermAppHelpers`
Move helper methods to a module `LoginHelpers`
Align arguments
Use named subject