first commit
first try
Merge https://github.com/mcgill-comp520-2013/group-d
extra file
extra file
extra file
Delete tiny.y~
Delete tiny.l~
Delete tree.c~
Delete main.o
Delete eval.o
Delete pretty.o
Delete tree.o
Delete y.tab.o
Delete Makefile~
Delete lex.yy.o
Delete memory.o
eval and exponential
Merge https://github.com/mcgill-comp520-2013/group-d
added basic algebra