Update app.py

app.py

@@ -4,7 +4,8 @@ import pandas as pd
 
 st.set_page_config(layout="wide")
 st.title("Visualising New York City crime data from 2006 - 2016.")
-st.write("This is a visualisation of crimes reported to the New York City Police Department between 2006 to 2016.")
+st.subheader("This is a visualisation of crimes reported to the New York City Police Department between 2006 to 2016.")
+st.subheader("Locations with longer columns imply higher crime reports.")
 st.write("Data: [NYC crime dataset](https://data.world/data-society/nyc-crime-data) from [data society](https://data.world/data-society).")
 
 @st.experimental_memo()