Fix find_wave script source

• fix: re-connect find_wave source location (#14)
• feat: add support for some GitHub Probot apps (#11)
• feat: add support for AllContributors.org
• docs: add pull request template (#10)
• docs: add issue templates (#9)
• docs: add @robmarkcole as a contributor (#8)
• docs: add @grangemd as a contributor (#7)
• docs: add @hpeyerl as a contributor (#6)
• docs: add @renemarc as a contributor (#3)
• docs: add contributing guide