Update README.md

just added procedure if using cmake-gui interface
Update README.md
Merge pull request #14 from albenoit/master

added a local extremum blob detector
fix compilation problems seen in #11
Merge branch 'master' of https://github.com/Itseez/opencv_contrib
Fix bioinspired build on Mac (clang)
Temporary hack to workaround optim build issue on Mac (clang)
Initial version of Travis config
Ping Travis
Fix Travis config
Revert "Temporary hack to workaround optim build issue on Mac (clang)"

This reverts commit 2fb9cac027f3582d499f0b6fa85093c3e4261e0c.
Workaround build issue on Mac
New feature to tracking sample

Now initial bounding frame can be given in command-line, as an alternative
to manual selection via mouse. Bounding frame is given as optional last
argument in the format "x1,y1,x2,y2" where x's and y's are integers,
symbolizing bounding box with opposite vertices (x1,y1) and (x2,y2).
Merge pull request #18 from nailbiter/feature

New feature to tracking sample
Merge pull request #16 from kirill-kornyakov/enable-travis

Enable travis and other fixes
Change Rect to Rect2d in Tracker::update() and ::init()

I've changed Rect to Rect2d in Tracker::update(), Tracker::init() and
all related methods (including documentation). This allows to initialize
trackers with double-valued rectangles, thus adding versality. Besides,
trackers also can output double-valued rectangles, which may be
beneficial in some scenarios.

However, it remains to change UML diagrams in documentation to tracker
module, as they still display methods above with old signatures.
Merge pull request #19 from nailbiter/Rect2d

Change Rect to Rect2d in Tracker::update() and ::init()
fix doc
Merge pull request #22 from alalek/fix_docs

(fix docs warnings)