Create ubuntu specific documentation based on https://forums.highfidelity.com/t/how-to-compile-a-stable-build-of-the-linux-server-stack-on-ubuntu-16-04-lts/11528/16 and tested yesterday.

BUILD_LINUX.md

@@ -1,7 +1,96 @@
+# Linux build guide
+
 Please read the [general build guide](BUILD.md) for information on dependencies required for all platforms. Only Linux specific instructions are found in this file.
 
-### Qt5 Dependencies
+## Qt5 Dependencies
 
 Should you choose not to install Qt5 via a package manager that handles dependencies for you, you may be missing some Qt5 dependencies. On Ubuntu, for example, the following additional packages are required:
 
     libasound2 libxmu-dev libxi-dev freeglut3-dev libasound2-dev libjack0 libjack-dev libxrandr-dev libudev-dev libssl-dev
+
+## Ubuntu 16.04 specific build guide
+
+### Prepare environment
+
+Install qt:
+```bash
+wget http://debian.highfidelity.com/pool/h/hi/hifi-qt5.6.1_5.6.1_amd64.deb
+sudo dpkg -i hifi-qt5.6.1_5.6.1_amd64.deb
+```
+
+Install build dependencies:
+```bash
+sudo apt-get install libasound2 libxmu-dev libxi-dev freeglut3-dev libasound2-dev libjack0 libjack-dev libxrandr-dev libudev-dev libssl-dev
+```
+
+To compile interface in a server you must install:
+```bash
+sudo apt -y install libpulse0 libnss3 libnspr4 libfontconfig1 libxcursor1 libxcomposite1 libxtst6 libxslt1.1
+```
+
+Install build tools:
+```bash
+sudo apt install cmake
+```
+
+### Get code and checkout the tag you need
+
+Clone this repository:
+```bash
+git clone https://github.com/highfidelity/hifi.git
+```
+
+To compile a RELEASE version checkout the tag you need getting a list of all tags:
+```bash
+git fetch -a
+git tags
+```
+
+Then checkout last tag with:
+```bash
+git checkout tags/RELEASE-6819
+```
+
+Or go to the highfidelity download page (https://highfidelity.com/download) to get the release version. For example, if there is a BETA 6731 type:
+```bash
+git checkout tags/RELEASE-6731
+```
+
+### Compiling
+
+Create the build directory:
+```bash
+mkdir -p hifi/build
+cd hifi/build
+```
+
+Prepare makefiles:
+```bash
+cmake -DQT_CMAKE_PREFIX_PATH=/usr/local/Qt5.6.1/5.6/gcc_64/lib/cmake ..
+```
+
+Start compilation and get a cup of coffee:
+```bash
+make domain-server assignment-client interface
+```
+
+In a server does not make sense to compile interface 
+
+### Running the software
+
+Running domain server:
+```bash
+./domain-server/domain-server
+```
+
+Running assignment client:
+```bash
+./assignment-client/assignment-client -n 6
+```
+
+Running interface:
+```bash
+./interface/interface
+```
+
+Go to localhost in running interface.