Add .gitignore
Add patch files
Change patch directory
Add installer
Installer upgrade: ns-3 building script and OS check
Readme update: add feature, bugfix, prerequisite and installation guide
sta-wifi-scan.patch bugfix
Readme update: add dependency
Minor refinement
Add ns3 patches and examples. Reorganize folder structure
Update installation guild
Change patch location
NetAnim python binding patch
Minor revision
Update patch for offset error in tap-bridge