simplify numeric tree nodes
gramma file added and parser modified
merge with fork and solve conflicts
cleanup and expand grammar
add tree finder
experiment with tree reduction
simplify tree
update gramma
Tree successfully reduced: str, symbol, int, float, bool, nil
Float modified
Tree successfully reduced: range
Merge pull request #10 from jeth64/master

Reduced parse tree
expand scope example
Parser modified
Merge pull request #11 from jeth64/master

Modified parser
minor cleanup
reduce tree again
Make values literal in Clojure types.
Parse lambda expressions and application (eval and apply). Due to left-recursion this is not complete yet.