Update README.md

added a useful remark regarding the use of homebrew
Merge branch 'patrik/master'

# By parallels
# Via parallels
* patrik/master:
  Added the Highpass Flag to the parameters GUI and corrected a single word "correspondence"
  Added HP-Flag to the main parameters window.
Merge branch 'master' into alexlib/master

# By Alex Liberzon (7) and parallels (2)
# Via Alex Liberzon (1) and parallels (1)
* master:
  Added the Highpass Flag to the parameters GUI and corrected a single word "correspondence"
  Added HP-Flag to the main parameters window.
  fixed back the bug of wrong call to img_coord - the present version in OpenPTV is using the old format. the future versions will be changed according to the refactor branch of Yosef on Bitbucket.
  splitted the long line of apt-get packages
  fixed a small documentation bug in the ptv.par description
  added license
  added license
  Update setup.py
  Create COPYING
changed Makefile to export html into ../../docs folder
 regenerated html
refactored the documentation directory /docs:
the make html creates now the documentation in the separate directory ../../docs/html which is easy to point to the gh-pages of the /docs repository, see http://alexlib.github.io/docs for the example
updated documentation, fixed the autodoc to use Python doctorings
merged Yulia patch for the set of packages to install on Ubuntu 12.04
imported from 3dptv.github.io the first page - introduction to 3D-PTV
Merge pull request #1 from alexlib/3dptv-documentation-import

imported from 3dptv.github.io the first page - introduction to 3D-PTV
removed obsolete an_introduciton_to_3dptv which moved into intro.txt
fixed some warnings in tutorial.txt
Update gui_doc.txt
Update intro.txt
Update intro.txt
small update of multimed.c
updated documentation
Merge branch 'master' of https://github.com/alexlib/openptv-python

* 'master' of https://github.com/alexlib/openptv-python:
  Update intro.txt
  Update intro.txt
  Update gui_doc.txt
removed obsolete installation instructions, everything is now in http://alexlib.github.io/docs/installation_instruction.html and in /source/installation_instructions.txt
updated Readme to reflect the change
updated the link to the docs
updated the line ./configure --prefix=/mingw for Windows

./configure --prefix=/mingw
Merge remote-tracking branch 'Alex/master' into Alex

Conflicts:
	docs/install_pyptv_ubuntu.md
	docs/source/index.txt
	docs/source/intro.rst
	docs/source/intro.rst~
	docs/source/tutorial.rst
	docs/source/tutorial.rst~