添加百度小程序适配器

[ivanlee93]

追加百度小程序适配器 src/adapter/bd.js 入口 src/bd.js

[codecov-io]

Codecov Report

Merging #218 into master will not change coverage. The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #218   +/-   ##
======================================
  Coverage    86.1%   86.1%           
======================================
  Files           1       1           
  Lines         259     259           
======================================
  Hits          223     223           
  Misses         36      36

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[mayunf]

希望适配百度小程序和头条小程序

[wanghanwanghan]

这个pr还没有合并进去吧?