GPU Acceleration achieved! (#1038)

* add gpu.js 2.0.0-rc.7

* add gpuUtils

* add gpuUtil convolve

* add convolution to edgeDetect

* bench it

* bench change

* newline

* pipeline

* revert edge-detect

* gpu accelerate gaussian blur

* edgeDetect use blur

* tweak values

* remove ndarray-gaussian-filter

* audit

* turn on previews

* remove oldPix

* fix travis

* Travis fix

* Try fixing travis

* Fix

* Retry

* tweaks

* convolution module on GPU

* use babelify

* trial

* remove logs

* Update .travis.yml

* Update .travis.yml

* bump version

* bump to rc.9

* rc.10

* rc.11

* Update package.json

* convolution fix

* unit test gpuUtils

* tests changed, fixed

* new fix

* more obvious parseFloat

* remove old commented code

.travis.yml

@@ -1,3 +1,4 @@
+sudo: required
 language: node_js
 node_js:
   - '6'
@@ -26,6 +27,10 @@ addons:
     packages:
       - g++-4.8
       - xvfb # for tape-run
+before_install:
+  - sudo apt-get update
+  - sudo apt-get install xserver-xorg-dev libxext-dev libxi-dev
+  - sudo apt-get install -y build-essential libxi-dev libglu1-mesa-dev libglew-dev pkg-config libglu1-mesa-dev freeglut3-dev mesa-common-dev
 install:
   - export DISPLAY=':99.0' # for tape-run
   - Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 & # for tape-run