partial finished code
Finished untested code;
class vertex and node are changed;
make gitignore
give error 0, where no charm node respond
modify Makefile
set ROOT= ..
ews doesn't support c++11
fix several bugs
remaining bugs exist due to pup for dynamic_bitset
 Fix bug in pup of vertex(especially for dynamic_biset)
Existing bug is due to assertion triggered by cklist
Need further debug
Code work for graph with 5 vertices
Work for graph with 10 vertices
comment out debug code