Merge pull request #358 from mutalyzer/centos6-fix

Fix installation on CentOS 6

doc/install.rst

@@ -18,9 +18,6 @@ which is the recommended setup.
    `Debian`_ 8 *jessie* system. You'll have to figure out the necessary
    adjustments yourself if you're on another system.
 
-   For example, RHEL6/CentOS6 is known to come with a version of libmagic
-   which is incompatible with Mutalyzer.
-
 The following steps will get Mutalyzer running on your system with the
 recommended setup:
 

requirements.txt

--e git+https://github.com/LUMC/magic-python.git#egg=Magic_file_extensions
+-e git+https://github.com/mutalyzer/magic-python.git@centos6-fix#egg=Magic_file_extensions
 Flask==0.10.1
 Jinja2==2.8
 MySQL-python==1.2.5