Bash script to install extensions

[nkorinek]

Bash script to run these lines

jupyter nbextension install --sys-prefix --py nbgrader --overwrite
jupyter nbextension enable --sys-prefix --py nbgrader
jupyter serverextension enable --sys-prefix --py nbgrader

[codecov]

Codecov Report

Merging #81 into master will not change coverage.
The diff coverage is n/a.

@@         Coverage Diff          @@
##           master   #81   +/-   ##
====================================
  Coverage      50%   50%           
====================================
  Files           2     2           
  Lines          26    26           
====================================
  Hits           13    13           
  Misses         13    13

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[lwasser]

woah @nkorinek you are a rockstar. Can you add instructions on how to call this file to the contributing.rst file in this same PR?!!
i'm super impressed that you went ahead and did this. Thank you!

[nkorinek]

@lwasser added the info into the contributing file

[lwasser]

tested locally and it works like a charm!! this addresses #81 merging!!

[lwasser]

thank you @nkorinek !!!

[lwasser]

closes #76