feat(isEAN) - added support for EAN-14 along with test case, feat(isAlphanumeric)- added options(optional parameter)

[varsubham]

Fix Issue #1576
Fix Issue #1572

Checklist

• PR contains support for EAN(barcode) of length 14. (issue Feature: Support GTIN-14 / EAN-UCC #1576 )
• added options(optional parameter) in isAlphanumeric (issue Is there a way to include options in isAlphaNumeric as in isAlpha? #1572 )
• Updated README file accordingly
• Tests written (where applicable)

[codecov]

Codecov Report

Merging #1577 (ff175d8) into master (1b85829) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master     #1577   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          100       100           
  Lines         1796      1807   +11     
=========================================
+ Hits          1796      1807   +11     

Impacted Files	Coverage Δ
src/lib/isPassportNumber.js	100.00% <ø> (ø)
src/lib/isAlphanumeric.js	100.00% <100.00%> (ø)
src/lib/isDataURI.js	100.00% <100.00%> (ø)
src/lib/isEAN.js	100.00% <100.00%> (ø)
src/lib/isIdentityCard.js	100.00% <100.00%> (ø)
src/lib/isMACAddress.js	100.00% <100.00%> (ø)
src/lib/isStrongPassword.js	100.00% <100.00%> (ø)

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[varsubham]

@profnandaa Hey can you please review the PR its one of my first PR 😄.
If there are any errors please let me know. 🙂

[renanmontebelo]

I believe they are waiting for #1553 before reviewing any other PR.

[renanmontebelo]

I believe the PR should only include files under src/, test/ and README.md; /validator.js and /validator.min.js are automatically generated by the build process (and by npm test) if I'm not mistaken.

[varsubham]

@renanmontebelo I thought that we need to check if all the test cases are running (npm test) before submitting a PR 🤔

[renanmontebelo]

These files are listed in .gitignore so I believe they shouldn't be added. Still, someone accidently added them that's why it's yielding as a modified file. See #1590 discussion.

[tux-tn]

Thank you and congrats for your first contrib @varsubham . I deleted validator.js and validator.min.js to fix merge conflicts, apart from that LGTM 🎉