Add requirements.txt in chapter for External Dependencies (#305)
Add requirements.txt in chapter for External Dependencies (#305)


Yajo/maintainer-tools,Yajo/maintainer-tools,gurneyalex/maintainers-tools,acsone/maintainers-tools,OCA/maintainer-tools,acsone/maintainer-tools,acsone/maintainer-tools,acsone/maintainer-tools,acsone/maintainers-tools,OCA/maintainer-tools,OCA/maintainer-tools,OCA/maintainer-tools,acsone/maintainers-tools,Yajo/maintainer-tools,acsone/maintainer-tools,Yajo/maintainer-tools