Added folder structure for version 2.

[jfeliu007]

Refactored the folder structure and tests for v2

[codecov]

Codecov Report

Merging #134 (4301203) into master (b02bc4a) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #134   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            5         5           
  Lines          625       625           
=========================================
  Hits           625       625           

Impacted Files	Coverage Δ
v2/parser/alias.go	100.00% <ø> (ø)
v2/parser/class_parser.go	100.00% <ø> (ø)
v2/parser/field.go	100.00% <ø> (ø)
v2/parser/function.go	100.00% <ø> (ø)
v2/parser/struct.go	100.00% <ø> (ø)

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