INSTALL.txt : few updates

INSTALL.txt

@@ -38,7 +38,7 @@ Hydrogen is known to work well on fairly old systems like this (as of
 -----------
 
 Hydrogen can be downloaded as a binary package, source distribution,
-or you can check out the current development version with Subversion.
+or you can check out the current development version.
 These can be accessed on the Hydrogen home page:
 
 	http://www.hydrogen-music.org/
@@ -139,6 +139,7 @@ We're providing a set of qmake project files for windows and
 mac osx builds. 
 Please read the relevant wiki pages for more informations:
 
+https://github.com/hydrogen-music/hydrogen/wiki/Building-Hydrogen-from-source-(LINUX)
 https://github.com/hydrogen-music/hydrogen/wiki/Building-Hydrogen-from-source-(MAC-OSX)
 https://github.com/hydrogen-music/hydrogen/wiki/Packaging-for-Windows
 
@@ -151,7 +152,7 @@ look like this:
 	$ tar xjf hydrogen-0.9.6.tar.bz2
 	$ cd hydrogen-0.9.6
 	$ mkdir build && cd build
-    	$ cmake ..
+	$ cmake ..
 	$ make && sudo make install
 
 All the following cmake commands should be executed in a build directory :
@@ -188,11 +189,11 @@ environment variables could help it.
  5.2 cmake helper
  ----------------
 
- Alternatively you could use the cmake helper : ./tools/cmake
+ Alternatively you could use the cmake helper : ./build.sh
 
  To remove and build hydrogen from scratch
 
-    $ ./tools/cmake r m
+    $ ./build.sh r m
 
 ___CREATING A BINARY PACKAGE___