Fix installation instructions

git-svn-id: https://svn.code.sf.net/p/dct/code/trunk@914 4c865b51-4357-4376-afb4-474e03ccb993

DCT_Documentation/user_manual/General_introduction.tex

@@ -32,9 +32,10 @@ will submit jobs to that cluster. More information about OAR can be found here:
 
 The next step now is to get the \ac{DCT} code from the \ac{SVN} repository. To do so, type:
 \begin{shCode}
+htc0000:~ % export https_proxy=http://proxy.esrf.fr:3128
 htc0000:~ % REPO=https://dct.svn.sourceforge.net/svnroot/dct
-htc0000:~ % svn co ${REPO}/trunk/DCTuser_setup.sh
-htc0000:~ % ./DCTuser_setup.sh
+htc0000:~ % wget ${REPO}/trunk/DCTuser_setup.sh
+htc0000:~ % . DCTuser_setup.sh
 \end{shCode}
 This script will download the \ac{DCT} code and will set up some necessary configurations.
 You will be asked which version to download. For users, it is recommended to get the stable version (the current stable version is \verb+stable_1.0+).