Add /v2/mounts endpoints

[codecov-io]

Codecov Report

Merging #46 into master will not change coverage. The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #46   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          51     52    +1     
  Lines        1133   1148   +15     
=====================================
+ Hits         1133   1148   +15

Impacted Files	Coverage Δ
src/client.js	100% <100%> (ø)	:arrow_up:
src/endpoints/mounts.js	100% <100%> (ø)

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[queicherius]

TYVM! 💯