Fix = operator in sh
Merge pull request #7 from czchen/bugfix/equal

Fix = operator in sh
Add gvc to configure.ac
Add gvc.c
Update Makefile.in
fix dep libgvc
Fix node pattern re-assignment
Add gvc_render and gvc_render tests
Add gvc to configure.ac
Add gvc.c
Update Makefile.in
fix dep libgvc
Fix node pattern re-assignment
Add gvc_render and gvc_render tests
Merge branch 'feature/graphviz'
document graphviz feature
Fix image markdown
update benchmark result.
performance improvement on plain string edge matching
newrecord~