Allow absolute template paths

[pke]

One can now specify an absolute path for templates and views root is ignored in that case.

Fixes
#320
https://github.com/niftylettuce/bug-bounties/issues/1

[codecov-io]

Codecov Report

Merging #329 into master will increase coverage by 0.07%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #329      +/-   ##
==========================================
+ Coverage   91.74%   91.81%   +0.07%     
==========================================
  Files           1        1              
  Lines         109      110       +1     
==========================================
+ Hits          100      101       +1     
  Misses          9        9

Impacted Files	Coverage Δ
src/index.js	91.81% <100%> (+0.07%)	⬆️

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