Layout user guide.

[rohitvarkey]

I've created a layout user guide using tiles of colors laid out in different fashions. I wasn't sure what packlines does, so just copy pasted the description from the api docs. I think I've covered everything listed in the index file under layout, except for Absolute Positioning. Borders and colors have been explained in theme.jl (which we should link to from the index page in some form).

I also moved all the user guide files to a user-guide directory to differentiate them from the normal examples and added links to the content and layout.

Do go through and let me know what you think!

cc: @shashi, @NOTtheMessiah, @alinchis

[alinchis]

The guide looks great. I have a question: should each example contain all necessary code, or it can rely on previous examples? I have the same dilemma regarding the Escher Guide, in particular the sierpinski function. If someone who is relatively familiar with Julia tries to run an example without reading the previous ones, it won't work.

One solution is to add a comment to describe the missing code like: # functionsierpinskidefinition, see Example #2

[alinchis]

the example code seems to be editable, is it intended like this?

[rohitvarkey]

I was trying to build up on the colortile function and try and explain things like that. But I did try and include most of the code required to just reproduce by copy pasting unless the code became too big and unwieldy. I think it's okay to expect users to understand and copy paste old examples also if errors are thrown, like for the sierpinski definition. But yeah, comments would clear any possible the confusion too.

the example code seems to be editable, is it intended like this?

I'd prefer it to be not editable too. I was just using the listing function used to create the other guides. Will look into making it not editable.

[shashi]

@rohitvarkey looking good! have you seen http://escher-jl.org/layout-guide.html ? Could pull in some stuff from it in the future.. @alinchis I think they need not be always fully self-contained. Stuff like sierpinski is very much fine to not repeat. Yes the cells are editable, you can hit ctrl+enter to run the code.

[rohitvarkey]

@shashi Totally forgot about that page. Will try and incorporate stuff from there, but I think I'll move onto widgets now and come back to layouts later. Can you add a section on absolute positioning and also explain packlines correctly?

I missed out on hskip and vskip too!

Yes the cells are editable, you can hit ctrl+enter to run the code.

Oops. I was doing Cmd+Enter and thinking it wasn't set to update. In that case, it's worth keeping the cells as editable!

[shashi]

@rohitvarkey I'll do it soon. Thanks! it looks like the code is not showing up on the layout-guide page.