10-minute tutorial with Koalas with a live notebook to try out

[HyukjinKwon]

This PR takes over #34 and #196

This PR also adds an integration with Binder which provides a docker based Jupyter notebook against the repository branch right way.

You can try this by clicking this - seems it can take up to around 5+ mins for the initial launch to prepare due to heavy dependencies like PySpark and Java installation (which seems not built-in).

As a bonus, pandoc seems supporting the conversion from Jupyter files to RST files. So, I might be able to generate documentation from this file and add it to our official documentation (based upon #842)

[HyukjinKwon]

I need to proof-read one more time. Will do it soon within few days but I would appreciate if you guys have some feedback.

[codecov-io]

Codecov Report

Merging #843 into master will increase coverage by 0.28%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #843      +/-   ##
==========================================
+ Coverage   94.17%   94.46%   +0.28%     
==========================================
  Files          32       32              
  Lines        6007     6409     +402     
==========================================
+ Hits         5657     6054     +397     
- Misses        350      355       +5

Impacted Files	Coverage Δ
databricks/koalas/missing/frame.py	100% <0%> (ø)	⬆️
databricks/koalas/series.py	95.24% <0%> (+0.16%)	⬆️
databricks/koalas/frame.py	96.58% <0%> (+0.48%)	⬆️

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[itholic]

@HyukjinKwon , It looks great work. and i took a look at this and fix some typos & codes (almost to keep convention), and add some contents Plotting, and Getting data in/out.
Since maybe github currently doesn't support ipynb file type for uploading,

i added additional string pdf for uploading, so maybe you should remove it before check this file on jupyter notebook.

10-minutes-to-Koalas.ipynb.pdf

could you check this file when you available.

Good evening :)

[HyukjinKwon]

Thx, let me push it first and clean up.

[gatorsmile]

This is great!

[ueshin]

This is great!

In the Jupyter notebook,

• Pandas -> pandas
• The explanation below In[1] is not right now.
• We don't need >>> and ... in each command
• I'd prefer ks.from_pandas(pdf) to ks.DataFrame(pdf) (In[10], In[48])
• ks.DataFrame(sdf) -> sdf.to_koalas() might be better? (In[16])

[HyukjinKwon]

Nice. Will address them soon. For >>> and ... I added them for the case we reuse it for our doc. Otherwise it cannot distinguish codes and output :).

[HyukjinKwon]

Let me merge this given many positive feedback in general - the last change was only README.md change. I will commit each to credit properly.

I will still have to touch this file in a separate PR to generate this file as the official documentation. I can handle some more comments here if you guys have some.