Update js/jquery.longpress.js

Added extended Latin and african Latin
Merge pull request #4 from keyten/patch-1

Update js/jquery.longpress.js
Added licence info to script and README (MIT)
Added licence info to demo page
Added ¡ suggestion (THX @raphaelbastide)
Added cameroon and pan-nigerian

:)
Merge pull request #8 from keyten/patch-2

Added cameroon and pan-nigerian
Added padding to fix issue #6
Adding macrons on Os to fix issue #9
Added punctuation, math, and formatting characters

Added the following characters: ≈≠≡≥›≤‹“”„‟′″‴‘’‚‛±†‡±‐–—…••‰¿‽‼¤§¶°
Merge pull request #10 from jsmreese/master

Added punctuation, math, and formatting characters
Implemented issue #12