feat: create index method

[aldy505]

closes #6

[codecov-commenter]

Codecov Report

Merging #13 (5af711e) into master (1108d98) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master       #13   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            9        10    +1     
  Lines          285       335   +50     
=========================================
+ Hits           285       335   +50     

Impacted Files	Coverage Δ
create_table.go	100.00% <ø> (ø)
bob.go	100.00% <100.00%> (ø)
create_index.go	100.00% <100.00%> (ø)

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