docs: Fix installation scripts

Mac OSX users should use package managers to install libusb
and glfw3. cl.hpp no longer needs downloading.

Fix install_ubuntu.sh to download debs properly for ARM users.

Author: xlz

depends/install_mac.sh

@@ -1,22 +1,23 @@
 #!/bin/sh
 
 cd `dirname $0`
-DEPENDS_DIR=`pwd`
-
-ARCH="$(uname -m | grep -q 64 && echo 'amd64' || echo 'i386')"
+ARCH=`/usr/bin/dpkg --print-architecture`
 
 # download standalone packages for 14.04 LTS
-wget -N http://archive.ubuntu.com/ubuntu/pool/universe/g/glfw3/libglfw3_3.0.4-1_${ARCH}.deb
-wget -N http://archive.ubuntu.com/ubuntu/pool/universe/g/glfw3/libglfw3-dev_3.0.4-1_${ARCH}.deb
-
-sh ./install_libusb.sh
+if [ "$ARCH" = amd64 -o "$ARCH" = i386 ]; then
+  REPO=http://archive.ubuntu.com/ubuntu
+else
+  REPO=http://ports.ubuntu.com/ubuntu-ports
+fi
+wget -N $REPO/pool/universe/g/glfw3/libglfw3_3.0.4-1_${ARCH}.deb
+wget -N $REPO/pool/universe/g/glfw3/libglfw3-dev_3.0.4-1_${ARCH}.deb
 
 cat <<-EOT
 
 	Execute the following commands to install the remaining dependencies (if you have not already done so):
 
 	sudo dpkg -i libglfw3*_3.0.4-1_*.deb
-	sudo apt-get install build-essential libturbojpeg libjpeg-turbo8-dev libtool autoconf libudev-dev cmake mesa-common-dev freeglut3-dev libxrandr-dev doxygen libxi-dev libopencv-dev automake
+	sudo apt-get install build-essential cmake pkg-config libturbojpeg libjpeg-turbo8-dev mesa-common-dev freeglut3-dev libxrandr-dev libxi-dev
 	sudo apt-get install libturbojpeg0-dev # (Debian)
 
 EOT