Some dependencies are missing in requirements.txt

[Julen]

While running build.py a few dependency-related errors arise:

convert php directory: ./tmp
sh: php2po: command not found

convert Android directory: ./tmp
sh: a2po: command not found

Traceback (most recent call last):
  File "~/.virtualenvs/tm-tools/bin/a2po", line 7, in <module>
    from android2po import run
  File "~/.virtualenvs/tm-tools/lib/python3.6/site-packages/android2po/__init__.py", line 5, in <module>
    from .program import *
  File "~/.virtualenvs/tm-tools/lib/python3.6/site-packages/android2po/program.py", line 16, in <module>
    from .commands import InitCommand, ExportCommand, ImportCommand, CommandError
  File "~/.virtualenvs/tm-tools/lib/python3.6/site-packages/android2po/commands.py", line 11, in <module>
    from termcolor import colored
ModuleNotFoundError: No module named 'termcolor'