We have an upcoming update that will address the decimal issue, as well as add an extra shortcode just to display coin logos.
We’re creating our own API on top of CoinMarketCap because we found that CoinMarketCap’s API is not fast/reliable enough to deliver real-time info. For this reason, we may choose to include more coins only in a premium version (since maintaining API servers cost money).
The only API that is free and compares to CoinMarketCap’s offering is CryptoCompare.com but unfortunately, they require attribution (in the form of a link) underneath all data you show coming from them. Hence why we are not using them and resorting to writing our own API.
I just updated the plugin and the fix for decimals is in 🙂
Just updated! Looks great!