add signin and signout api for company.
add beacon api for company.
add document api for comany.
change pdf dir files/ to files/company_id.
plz reupload pdf files.
add members api for company.
add setting api for company.
add user setting api for company.
add seminar api for company.
add seminars/documents api for company.
add attendance api for company.
add is_public to documents.
update seminar api for company.
add histories api for company.
Merge pull request #96 from givery-technology/companies_api

Companies api