Fix for the recently added install instructions.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3392 44740490-163a-0410-bde0-09ae8108e29a

docs/simplesamlphp-install-repo.txt

 Installing SimpleSAMLphp from the repository
 ============================================
 
-These are some notes about running SimpleSAMLphp from subversion.
+These are some notes about running SimpleSAMLphp from the repository.
 
 Installing from github
 ----------------------
@@ -36,7 +36,7 @@ Go to the root directory of your simpleSAMLphp installation:
 Ask git to update to the latest version:
 
     git fetch origin
-    git pull master
+    git pull origin master
 
 Install the external dependencies with Composer (http://getcomposer.org/):
     php composer.phar install