Added note about installation with existing WSGI applications
Added note about installation with existing WSGI applications

rouault/pycsw,ricardogsilva/pycsw,bukun/pycsw,tomkralidis/pycsw,benhowell/pycsw,benhowell/pycsw,tomkralidis/pycsw,ingenieroariel/pycsw,ocefpaf/pycsw,tomkralidis/pycsw,geopython/pycsw,kalxas/pycsw,mwengren/pycsw,ckan-fcd/pycsw-fcd,bukun/pycsw,ckan-fcd/pycsw-fcd,ricardogsilva/pycsw,geopython/pycsw,ricardogsilva/pycsw,rouault/pycsw,kalxas/pycsw,kevinpdavies/pycsw,mwengren/pycsw,kevinpdavies/pycsw,bukun/pycsw,ingenieroariel/pycsw,ocefpaf/pycsw,geopython/pycsw,kalxas/pycsw