Added the "jquery-plugin" keyword.
Merge pull request #4045 from itinken/jinplace-keywords

[author] Added the "jquery-plugin" keyword.
add intro.js v0.6.0
add yasqe v2.2.3
add yasr v2.2.2
fix fonts in slick-carousel, fix #4046
add annyang v1.5.0
add froala-editor v1.2.4
add jsonld v0.3.8
add signature_pad v1.3.4
add timelinejs v2.35.2