[WIP] Feature/link

[howardroark]

Closes #24

"link": [
    { "origin-path": "linked/path" }
],

linked/path should end up having a relative path symlink back to origin-path

[coveralls]

Coverage increased (+0.2%) to 80.851% when pulling 0049b4e on feature/link into 3accdeb on develop.

[coveralls]

Coverage decreased (-0.04%) to 80.636% when pulling 4cf9566 on feature/link into 3accdeb on develop.

[coveralls]

Coverage decreased (-0.04%) to 80.636% when pulling 4cf9566 on feature/link into 3accdeb on develop.

[coveralls]

Coverage decreased (-2.9%) to 77.824% when pulling 1981990 on feature/link into 3accdeb on develop.