README.txt edited online with Bitbucket

README.txt

-This program has been developped from the CAMEL IDL code written in the frame of MASSIV and MUSE.
+CAMEL (Cube Analysis: Moment maps of Emission Lines) has been developped from an IDL code written in the frame of MASSIV and MUSE.
 
-This programs is based on Levendberg-Marquart minimisation technique and uses the mpfit library that can be found here:
-https://code.google.com/p/astrolibpy/downloads/detail?name=mpfit.tar.gz&can=2&q=
-
-It runs with python 2.7 and uses standard python libraries:
+It runs with python above version 2.7 (including versions 3.x) and uses standard python libraries:
 time, os, sys, copy, numpy, pyfits, scipy, optparse
 
+CAMEL is based on the Levendberg-Marquart minimisation technique and uses the mpfit library that can be found here:
+https://code.google.com/p/astrolibpy/downloads/detail?name=mpfit.tar.gz&can=2&q=
+To work both with python 2.7 and python 3.x, we have used the cap_mpfit.py version of mpfit provided by Michele Capellarri:
+http://www-astro.physics.ox.ac.uk/~mxc/software/
+
 To be executable from command line, it has to be in the path environment variable.
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