Update link to doc
executor: remove direct reference to loopback

Modify the executor to access the loopback object via `app.loopback`.

Fall back to `require('loopback')` only when `app.loopback` is not set
(loopback versions before 1.9).
docs: move hand-written content to README.md
Merge pull request #14 from strongloop/feature/add-more-meat-to-readme

docs: move hand-written content to README.md
Merge pull request #15 from strongloop/feature/remove-last-require-loopback

executor: remove direct reference to loopback
1.1.0
Merge branch 'release/1.1.0' into production
Merge tag 'v1.1.0'

1.1.0
Merge branch 'master' into 2.0

Conflicts:
	README.md
	docs/configuration.md
	lib/executor.js
	package.json

Changes in the docs were merged manually and updated to correctly
describe the 2.x layout.