reorderd by os

install.md

@@ -1,8 +1,8 @@
 # Build instructions
 
-## Prerequisites
 
-### Windows
+## Windows
+### Prerequisites
 * Install [Git](http://git-scm.com/download/win/)
 * Install Visual Studio 2013 or later:
    * [Visual Studio Community Edition](https://www.visualstudio.com/en-us/products/visual-studio-community-vs/)
@@ -12,27 +12,7 @@
    * Make sure you select the correct version (`msvc2013 64-bit` or similar)
 * Add Qt to your PATH (`C:\Qt\5.4\msvc2013_64\bin` or similar)
 
-### OSX
-First make sure you have a recent version of XCode.
-
-Install [Homebrew](http://brew.sh)
-
-```sh
-brew install qt5
-brew link --force qt5
-```
-
-### Linux
-The following packages are necessary to compile (Debian/Ubuntu).
-
-```sh
-sudo apt-get install qt5-default qt5-qmake git
-sudo apt-get install libfreeimage-dev libopencv-core-dev libopencv-core-dev libopencv-imgproc-dev libopencv-highgui-dev
-```
-
-## Build
-
-### Windows
+### Build
 ```sh
 git clone --recursive https://github.com/cpvrlab/ImagePlay.git
 cd ImagePlay
@@ -48,15 +28,35 @@ qmake -tp vc -r
  * Disable *Shadow build* in the project settings.
  * Run
 
-### OSX
+## OSX
+### Prerequisites
+First make sure you have a recent version of XCode.
+
+Install [Homebrew](http://brew.sh)
+
+```sh
+brew install qt5
+brew link --force qt5
+```
+### Build
 ```sh
 git clone --recursive https://github.com/cpvrlab/ImagePlay.git
 cd ImagePlay
 qmake -recursive
 make 
 ```
 
-### Linux
+
+## Linux
+### Prerequisites
+The following packages are necessary to compile (Debian/Ubuntu).
+
+```sh
+sudo apt-get install qt5-default qt5-qmake git
+sudo apt-get install libfreeimage-dev libopencv-core-dev libopencv-core-dev libopencv-imgproc-dev libopencv-highgui-dev
+```
+
+### Build
 ```sh
 git clone --recursive https://github.com/cpvrlab/ImagePlay.git
 cd ImagePlay