Merge pull request #1 from Genki-S/nnujabok/add_trouble_shooting

Add trouble shooooooting
Write about wireless setup on Raspberry Pi
Merge pull request #2 from Genki-S/write_about_wireless_network_configuration

Write about wireless setup on Raspberry Pi
Add rapiro directory
Write README
Merge pull request #3 from Genki-S/add_rapiro_directory

Add rapiro directory
Update trouble shooting