Update README.md

README.md

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+[![Build Status](https://travis-ci.org/kodi-pvr/pvr.iptvsimple.svg?branch=master)](https://travis-ci.org/kodi-pvr/pvr.iptvsimple)
+[![Coverity Scan Build Status](https://scan.coverity.com/projects/5120/badge.svg)](https://scan.coverity.com/projects/5120)
+
 # IPTV Simple PVR
 IPTV Live TV and Radio PVR client addon for [Kodi] (http://kodi.tv)
 
+## Build instructions
+
+### Linux
+
+1. `git clone https://github.com/xbmc/xbmc.git`
+2. `git clone https://github.com/kodi-pvr/pvr.iptvsimple.git`
+3. `cd pvr.iptvsimple && mkdir build && cd build`
+4. `cmake -DADDONS_TO_BUILD=pvr.iptvsimple -DADDON_SRC_PREFIX=../.. -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=../../xbmc/addons -DPACKAGE_ZIP=1 ../../xbmc/project/cmake/addons`
+5. `make`
+
 ##### Useful links
 
 * [Kodi's PVR user support] (http://forum.kodi.tv/forumdisplay.php?fid=167)