Adds Command Line Interface for generating PNGs from mermaid description files

[fardog]

As discussed in #6, the following PR adds a CLI for mermaid which is exposed as a mermaid command when installed globally, via npm install -g mermaid. mermaid will look for the phantomjs command in your PATH and give helpful errors if it's not found, or is too old. Additionally, you can specify the path to phantomjs with the -e switch.

Otherwise, functionality is identical to my mermaid-cli package, which will be deprecated once this PR is accepted and a new version including the CLI is published. Then, we can focus on improvements here!

[fardog]

An item that I'd like to dicuss is testing; the test harness that's already included with mermaid isn't suitable for testing a CLI tool, so I added tests that are based on tape a very minimal TAP-producing test harness. However, outside of exposing gulp tape to run these tests, I have not integrated them anywhere; I'd appreciate guidance on how this could be added so Travis can run these tests, or, if you want to go ahead and merge and then integrate them how you see fit, that's good by me!

[knsv]

Great work! Nice to soon be able to close Issue #6.

I will add a new gulp task 'test' which depends on both the jasmine tests and the tape tests. Then I will let travis run this new task.

Thanks! This is a highly requested feature!

[fardog]

Excellent! Feel free to mention me on any bugs and enhancements that come in for the CLI, and I can help you keep it maintained.

[knsv]

Sounds like a plan! Thanks again for your help!

Knut Sveidqvist
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On Monday 22 December 2014 at 00:31, Nathan Wittstock wrote:

Excellent! Feel free to mention me on any bugs and enhancements that come in for the CLI, and I can help you keep it maintained.

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