docker/fig — pull request #568 by Aigeruth (2014-10-21 11:45:48+00:00)
Title: Convert project_name to lowercase

```bash
$ fig up
Creating FIGtest_test_1...
Building test...
Invalid repository name (FIGtest_test), only [a-z0-9-_.] are allowed
$ cat fig.yml
test:
build: test/
$ cat test/Dockerfile
FROM scratch
$ basename $(pwd)
FIG-test
```

IMHO `.` and `-` could be allowed in the a `normalize_name` method too. What is your opinion?