Travis - add osx, remove 0.7 add 1.1

[IanButterworth]

Attempting to root out JuliaImages/ImageView.jl#175

[IanButterworth]

Now that osx is added to travis, its seems like my issues from JuliaImages/ImageView.jl#175 are replicated

[IanButterworth]

These tests are failing with both width and height returned as 1:

using GtkReactive, Gtk.ShortNames, Graphics, Test

c = canvas(208, 207)
win = Window(c)
Gtk.showall(win)
sleep(0.1)
@test Graphics.width(c) == 208
@test Graphics.height(c) == 207

@timholy any ideas?!

[timholy]

Interesting, and obviously unfortunate. Is it "just" a test failure or does it fail in real-world practice? Do either of the following demos work for you:

• http://juliagraphics.github.io/Gtk.jl/latest/manual/canvas.html, which should give
  
• https://github.com/JuliaGizmos/GtkReactive.jl/blob/master/examples/imageviewer.jl, which is basically documented here

[IanButterworth]

Both examples result in blank windows, with no errors.

It would be good if another MacOS user could locally test this, and if theirs works, figure out what's different about my setup

[timholy]

OK, this is probably a Gtk or Cairo error. Do any non-canvas aspects of Gtk work for you?

[IanButterworth]

Cairo seems ok.. tests pass and this renders the png properly
https://github.com/JuliaGraphics/Cairo.jl/blob/master/samples/sample_arc.jl

Gtk tests pass, but the windows during the tests are blank, as is the window in the basic examples
http://juliagraphics.github.io/Gtk.jl/latest/manual/gettingStarted.html

I just removed the full Gtk package dir and rebuilt and have the same issue

[timholy]

OK, it seems this is a Gtk issue. I'll close this and the one in ImageView, and perhaps you can report issues there.

This adds fuel to the fire of replacing Gtk with something else. But that is a lot of work so I am not there yet.

[IanButterworth]

Ok. I've repurposed JuliaGraphics/Gtk.jl#414

Is this PR worth merging? Only adjust travis to cover osx and v1.1

[timholy]

Indeed. Letting osx fail will remind me that we need to fix this sometime. Thanks!

[timholy]

Ah shoot, I should have asked you to change the bounds in Project.toml (principle: don't claim to support 0.7 unless you're testing it). But I will fix it.

[IanButterworth]

Ah, missed that. Apologies