add Gist
Merge branch 'master' of http://svn.apexlab.org/git/cvimagefeatures
Merge branch 'master' of http://svn.apexlab.org/git/cvimagefeatures
Merge branch 'master' of http://svn.apexlab.org/git/cvimagefeatures
Merge branch 'master' of http://svn.apexlab.org/git/cvimagefeatures

merge
add vlfeat
add configure, automated
fix configure
fix configure
automatically remove cache
write README.md