Upgrade pyrecordio to support python 3.7 and 3.8

[brightcoder01]

While we execute pip install pyrecordio in the docker image python:3.7, the log is as follows:

Collecting pyrecordio
  Downloading pyrecordio-0.0.6.tar.gz (3.6 kB)
Building wheels for collected packages: pyrecordio
  Building wheel for pyrecordio (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: /usr/local/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-lv9jstn0/pyrecordio/setup.py'"'"'; __file__='"'"'/tmp/pip-install-lv9jstn0/pyrecordio/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-sz7fzs9z
       cwd: /tmp/pip-install-lv9jstn0/pyrecordio/
  Complete output (11 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.linux-x86_64-3.7
  creating build/lib.linux-x86_64-3.7/recordio
  copying recordio/recordio.py -> build/lib.linux-x86_64-3.7/recordio
  copying recordio/__init__.py -> build/lib.linux-x86_64-3.7/recordio
  running build_ext
  $ GOPATH=/tmp/tmplsghwzpw go get -d
  error: [Errno 2] No such file or directory: 'go': 'go'
  ----------------------------------------
  ERROR: Failed building wheel for pyrecordio

We are not getting pyrecordio==0.0.7 as our expectation. The reason may be that we haven't release the pyrecordio for python 3.7 or higher version.