Update README.md

[servusdei2018]

Fixed syntax error in example code:

import github.com/labstack/gommon/color is invalid Go syntax because it omits quotes. Replaced with import "github.com/labstack/gommon/color"

[codecov-commenter]

Codecov Report

Merging #40 into master will increase coverage by 0.18%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #40      +/-   ##
==========================================
+ Coverage   59.26%   59.45%   +0.18%     
==========================================
  Files           6        6              
  Lines         518      365     -153     
==========================================
- Hits          307      217      -90     
+ Misses        208      146      -62     
+ Partials        3        2       -1     

Impacted Files	Coverage Δ
bytes/bytes.go	96.15% <0.00%> (-0.34%)	⬇️
log/color.go	100.00% <0.00%> (ø)
email/email.go	0.00% <0.00%> (ø)
random/random.go	100.00% <0.00%> (ø)
color/color.go	88.60% <0.00%> (+0.25%)	⬆️
log/log.go	59.58% <0.00%> (+8.64%)	⬆️

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