Creation of prettytable-rs-derive and the creation of table from vector

[thymbahutymba]

Pull request referring to the issue #109

[thymbahutymba]

Of course I created a new module for better understand my point of view and the solution that I thought, I was thinking to remove the module and put all code together.

[phsym]

Hi ! Looks promising, thanks. I need to read in more details to understand your code but in the meantime could you please rebase ? I just brought some changes to master which should fix your build in Travis.

[codecov]

Codecov Report

Merging #110 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #110   +/-   ##
=======================================
  Coverage   84.11%   84.11%           
=======================================
  Files           5        5           
  Lines        1177     1177           
=======================================
  Hits          990      990           
  Misses        187      187

Impacted Files	Coverage Δ
src/lib.rs	85.21% <ø> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 1e06ea7...8b7643b. Read the comment docs.

[thymbahutymba]

Here we are, I rebased the code and I hope I did everything right!