Debugging for removing the locks in calling pattern matcher.
Merge branch 'master' of http://github.com/opencog/opencog into PM
Removed a lock , raised the speed of mining
Merge branch 'master' of http://github.com/opencog/opencog into PM
Test Linas's fix  #1026
Rewrite the 2-atomspace code to use nested atomspace.
Changed 1-gram index order. Changed flush progress output .
extend the feature-selection man page
steps to supporting the 'random' feature selector
feature-selection: add some documentation
updated documentation
More documentation
Add a random feature selector
Add unit test for random feature selection
typo in file-name
Merge pull request #1031 from linas/moran

update feature-selection documentation, add random selector
update code documentation
Merge branch 'master' of http://github.com/opencog/opencog into PM
Update tutorial with PYTHONPATH instructions

Per discussion with @anitzkin
Added installation of graphviz to instructions