updated README

1 job for master in 2 minutes and 17 seconds (queued for 5 seconds)
Name Stage Failure
pages Deploy
  Stored in directory: /root/.cache/pip/wheels/b1/c2/ed/d62208260edbd3fa7156545c00ef966f45f2063d0a84f8208a
Building wheel for termcolor (setup.py): started
Building wheel for termcolor (setup.py): finished with status 'done'
Stored in directory: /root/.cache/pip/wheels/7c/06/54/bc84598ba1daf8f970247f550b175aaaee85f68b4b0c5ab2c6
Successfully built wikipedia theano scriptinep3 tflearn wrapt termcolor
Could not build wheels for pandas which use PEP 517 and cannot be installed directly
You are using pip version 19.0.3, however version 21.2.4 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Cleaning up file based variables
ERROR: Job failed: exit code 1