Improve header comment in build files
-rw-r--r-- 108 .gitignore
-rw-r--r-- 110 .gitmodules
-rw-r--r-- 100 .travis.yml
-rw-r--r-- 5780 CHANGELOG.md
-rw-r--r-- 1070 LICENSE
-rw-r--r-- 3121 Makefile
-rw-r--r-- 3296 README.md
drwxr-xr-x - assets
drwxr-xr-x - build
drwxr-xr-x - doc
drwxr-xr-x - example
drwxr-xr-x - lib
-rw-r--r-- 443 package.json
drwxr-xr-x - release
drwxr-xr-x - server
drwxr-xr-x - src
drwxr-xr-x - test