Le terminal ~/.profile ne contient pas `source ~/.bashrc` dans OS X 10.9.1

Le terminal apparaît ci-dessous à cette étape de la page d'installation de Gerris : http://gfs.sourceforge.net/wiki/index.php/Mac_OSX_Installation

Note: make sure that the file ~/.profile contains the line
source ~/.bashrc

Mais le ~/.profile ne contient pas la source ~/.bashrc. Comment puis-je le gérer ?

GNU nano 2.0.6        File: /Users/samirebalta/.profile                     

# MacPorts Installer addition on 2014-01-21_at_11:48:31: adding an appropriate $
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
# Finished adapting your PATH environment variable for use with MacPorts.

##
# Your previous /Users/samirebalta/.profile file was backed up as /Users/samire$
##

# MacPorts Installer addition on 2014-01-21_at_12:00:12: adding an appropriate $
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
# Finished adapting your PATH environment variable for use with MacPorts.

##
# Your previous /Users/samirebalta/.profile file was backed up as /Users/samire$
##

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