update doc and config

[codecov[bot]]

Codecov Report

Merging #51 (407c862) into v0.2.0 (cce99ad) will decrease coverage by 0.00%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           v0.2.0      #51      +/-   ##
==========================================
- Coverage   86.15%   86.15%   -0.01%     
==========================================
  Files          81       87       +6     
  Lines        4457     4499      +42     
==========================================
+ Hits         3840     3876      +36     
- Misses        617      623       +6     

Flag	Coverage Δ
unittests	86.15% <100.00%> (-0.01%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
gobigger/configs/__init__.py	100.00% <100.00%> (ø)
gobigger/configs/st_t1p1.py	100.00% <100.00%> (ø)
gobigger/configs/st_t1p2.py	100.00% <100.00%> (ø)
gobigger/configs/st_t2p1.py	100.00% <100.00%> (ø)
gobigger/configs/st_t5p3.py	100.00% <100.00%> (ø)
gobigger/configs/st_t5p4.py	100.00% <100.00%> (ø)
gobigger/configs/st_t6p4.py	100.00% <100.00%> (ø)
gobigger/server/tests/test_server.py	90.41% <0.00%> (-9.59%)	:arrow_down:
gobigger/utils/collision_detection.py	95.00% <0.00%> (-2.00%)	:arrow_down:
gobigger/balls/clone_ball.py	95.48% <0.00%> (-0.57%)	:arrow_down:
... and 2 more

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