Adding docs

[hectorhdzg]

Fixes #58

[codecov-io]

Codecov Report

Merging #60 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #60   +/-   ##
=======================================
  Coverage   98.39%   98.40%           
=======================================
  Files          13       13           
  Lines         749      751    +2     
  Branches       95       96    +1     
=======================================
+ Hits          737      739    +2     
  Misses          9        9           
  Partials        3        3           

Impacted Files	Coverage Δ
...itor/src/azure_monitor/auto_collection/__init__.py	100.00% <ø> (ø)
...zure_monitor/auto_collection/dependency_metrics.py	100.00% <ø> (ø)
...ure_monitor/auto_collection/performance_metrics.py	100.00% <ø> (ø)
...c/azure_monitor/auto_collection/request_metrics.py	100.00% <ø> (ø)
azure_monitor/src/azure_monitor/export/__init__.py	100.00% <100.00%> (ø)
...nitor/src/azure_monitor/export/metrics/__init__.py	96.00% <100.00%> (ø)
...monitor/src/azure_monitor/export/trace/__init__.py	100.00% <100.00%> (ø)
azure_monitor/src/azure_monitor/options.py	100.00% <100.00%> (ø)

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[hectorhdzg]

https://travis-ci.com/github/hectorhdzg/opentelemetry-exporters-python/builds/154868101?utm_medium=notification&utm_source=email

[lzchen]

Here as well.

[lzchen]

One last comment. Otherwise looks good!