Update using.dox

typo
Merge pull request #147 from larryxiao/master

Update using.dox, a typo

Thanks!!
graph loading finished
Finish tree construction
Add detailed comment
article tree generation and path shippment finished.
modify MTUNE to avoid illegal instructions
also change MACH
hello test
graph loading finished
Finish tree construction
Add detailed comment
article tree generation and path shippment finished.
messed up SIGSEGV
messup
backup
add_edge create num*core edges
add_edge create num*core edges
token shipment okay
solve conflict