bst first try
some stuff about balanced and unbalanced
new bst file
dfs link added
images for dfs traversal options
added height but not code
min max of bst
link to todo questions
common ancestor basic code
ref for lowest common ancestor
cleaner
list of questions left for other kinds of tree
chanbed read me link for bst
Merge pull request #56 from khan4019/master

get latest including bst