add useHostForBundles to README docs

[chrisradek]

Adding documentation to match the types.

Most of the changes are just whitespace from the formatter - useHostForBundles is the field being added.

[codecov-commenter]

Codecov Report

Merging #97 (1904354) into master (e0e7ce0) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master       #97   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines           44        44           
  Branches        15        15           
=========================================
  Hits            44        44           

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