Linux lib dependencies not automatically installed

[benwiley4000]

My install failed on several counts; I fixed all but one.

The outstanding issue is the esprima-six dependency, which I understand should be eliminated soon (any word on that? the last mention I saw was 15 days ago: #150 (comment)).

The rest are libs that the installer expects to be available, and aren't (at least on my Ubuntu Linux system).

I had to install the following (ubuntu repo package names):

• libcairo2-dev
• libpango1.0-dev
• libjpeg8-dev
• libgif-dev

To save hassle in the future, it would be great if those system dependencies are made obvious in the documentation, for users on systems which might not provide them automatically.

[mattdesl]

The esprima-six thing should be fixed now. #145 (comment)