The build process also requires pkg-config

At least on ubuntu.
Merge pull request #14 from thedrow/patch-1

The build process also requires pkg-config
r3_tree_insert_path API changes
Add CHANGELOGS
Fix r3_tree_match_route
Add r3_ prefix to route struct related functions
update changelogs
Fix markdown
fix changelogs
Add endpoint check
show people how to release the tree
Add GA code
adjust chart width and height
use r3_tree_matchl
-fprofile-arcs -ftest-coverage for debug mode
travis ci: update dev deps
update README
Formatting optimization of C code in the README file.
Merge pull request #18 from thedrow/patch-1

Formatting optimization of C code in the README file.
remove paragraph