add option to disable compression to echoprometheus

[fraidev]

I already have GZIP middleware set up for all routes, then it's compressing twice for me.

[aldas]

I think compression should be disabled by default and enabled by adding .Use(middleware.Gzip()) to that route explicitly (would be more intuitive from Echo side).

so

h := promhttp.HandlerFor(config.Gatherer, promhttp.HandlerOpts{DisableCompression: true})

would be fine.

[fraidev]

I think compression should be disabled by default and enabled by adding .Use(middleware.Gzip()) to that route explicitly (would be more intuitive from Echo side).

so

h := promhttp.HandlerFor(config.Gatherer, promhttp.HandlerOpts{DisableCompression: true})

would be fine.

Make sense! I added a new commit.

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (1b74ff7) 63.77% compared to head (3dd0ae7) 63.77%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #97   +/-   ##
=======================================
  Coverage   63.77%   63.77%           
=======================================
  Files           9        9           
  Lines         944      944           
=======================================
  Hits          602      602           
  Misses        302      302           
  Partials       40       40           

Impacted Files	Coverage Δ
echoprometheus/prometheus.go	77.16% <100.00%> (ø)

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[aldas]

@fraidev merged, Thanks!