Recommend: submit excelR to htmlwidgets.org to post on their gallery!

**Is your feature request related to a problem? Please describe.**
No

**Describe the solution you'd like**
excelR catalogued in the htmlwidgets website so other users can find this amazing package!

**Describe alternatives you've considered**
word of mouth, R blogs to spread the news

**Additional context**
Add any other context or screenshots about the feature request here.
