[colobot] 160/390: Updated INSTALL.md to reflect latest changes to music repository

[Didier Raboud]

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commit f7f9ac08b3cec00ab4793333ab6824b7829d6890
Author: krzys_h <krzys_h at interia.pl>
Date:   Sat Nov 1 13:53:58 2014 +0100

    Updated INSTALL.md to reflect latest changes to music repository
---
 INSTALL.md | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/INSTALL.md b/INSTALL.md
index fbf4ece..4537e8f 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -117,10 +117,11 @@ You will need:
  * OpenAL (OpenAL-Soft) >= 1.13
  * PhysFS
  * po4a >= 0.45 (to generate translated data files)
+ * oggenc (to generate music files)
 
 On Ubuntu (and probably any other Debian-based system), you can use the following command to install all required packages:
 ```
-  $ apt-get install build-essential cmake libsdl1.2debian libsdl1.2-dev libsdl-image1.2 libsdl-image1.2-dev libsdl-ttf2.0-0 libsdl-ttf2.0-dev libsdl-mixer1.2 libsdl-mixer1.2-dev libsndfile1-dev libvorbis-dev libogg-dev libpng12-dev libglew-dev libopenal-dev libboost-dev libboost-system-dev libboost-filesystem-dev libboost-regex-dev libphysfs-dev gettext git po4a
+  $ apt-get install build-essential cmake libsdl1.2debian libsdl1.2-dev libsdl-image1.2 libsdl-image1.2-dev libsdl-ttf2.0-0 libsdl-ttf2.0-dev libsdl-mixer1.2 libsdl-mixer1.2-dev libsndfile1-dev libvorbis-dev libogg-dev libpng12-dev libglew-dev libopenal-dev libboost-dev libboost-system-dev libboost-filesystem-dev libboost-regex-dev libphysfs-dev gettext git po4a vorbis-tools
 ```
 
 Make sure you install the packages along with header files (often distributed in separate *-dev packages). If you miss any requirements,
@@ -136,6 +137,10 @@ If you want to compile development branch, change the first command to:
 ```
   $ git clone -b dev https://github.com/colobot/colobot.git /path/to/colobot/sources
 ```
+If you also want to download optional music files, add --recursive to third command like so:
+```
+  $ git submodule update --init --recursive
+```
 It is recommended that you create a build directory:
 ```
   $ mkdir build

-- 
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