Implemented CTRL + Arrows to move to next/previous word

[eusuntcarol]

Using CTRL+ Arrow Left/Right moves the cursor to previous/next word.

• I extended the fuctionality of cursor movement to detect if CTRL key is pressed.
• I updated the README.md to reflect these changes.

This closes #82

[codecov]

Codecov Report

Base: 42.15% // Head: 42.51% // Increases project coverage by +0.35% 🎉

Coverage data is based on head (7b3e58f) compared to base (ed5244e).
Patch coverage: 53.57% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #214      +/-   ##
==========================================
+ Coverage   42.15%   42.51%   +0.35%     
==========================================
  Files          10       10              
  Lines         918      915       -3     
==========================================
+ Hits          387      389       +2     
+ Misses        531      526       -5     

Flag	Coverage Δ
x86_64-apple-darwin	42.51% <53.57%> (+0.35%)	⬆️
x86_64-unknown-linux-gnu	42.40% <53.57%> (+0.35%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/unix.rs	0.00% <0.00%> (ø)
src/editor.rs	28.40% <53.84%> (+0.78%)	⬆️
src/row.rs	56.60% <100.00%> (-0.41%)	⬇️
src/config.rs	91.17% <0.00%> (-0.74%)	⬇️

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[ilai-deutel]

Thank you for your contribution!

[ilai-deutel]

@all-contributors please add @Carol-mb for code

[allcontributors]

@ilai-deutel

I've put up a pull request to add @Carol-mb! 🎉

[ilai-deutel]

Thanks again!