Updated README.md

Author: dineshpinto

README.md

@@ -7,9 +7,9 @@
 ## Unofficial Python client for Coinglass API
 
 Wrapper around the [Coinglass API](https://coinglass.com/pricing) to fetch data about the crypto markets.
-All data is output in pandas DataFrames (single or multi-index) and all time series data uses a DateTimeIndex.
+All data is output in pandas DataFrames (single or multi-index) and all time series data uses a `DateTimeIndex`.
 
-**Note**: Currently only supports the `indicator` API endpoint.
+**Note**: Currently supports the `indicator` and `index` API endpoints.
 
 ![Example Plot](https://github.com/dineshpinto/coinglass-api/blob/main/examples/example_plot.jpg?raw=true)
 
@@ -46,6 +46,11 @@ liq_btc = cg.liquidation_symbol(symbol="BTC", interval="h4")
 
 # Get long/short ratios for BTC
 lsr_btc = cg.long_short_symbol(symbol="BTC", interval="h4")
+
+# Get GBTC market history
+gbtc_history = cg.grayscale_market_history()
+
+# and more...
 ```
 
 ## Examples