Add smartbatt module specifications, and links to it

Author: RKBoss6

apps/widsmartbatt/README.md

@@ -1,12 +1,12 @@
 # Smart Battery Widget
-Shows battery in terms of days (21 days, 12 hours), and learns from your daily usage to give better estimations.
+Shows battery in terms of days (21 days, 12 hours), and uses the [`smartbatt`](https://banglejs.com/apps/?id=smartbatt) module to learn from daily battery drainage and provide accurate estimations.
 This app was modified from `wid_a_battery_widget`, by @alainsaas
 
-When you install the app for the first time, or clear the data, the forecast will fluctate, and will not be reliable for a while. As it learns from your usage,  it will keep learning, and provide better predictions.
-The app learns by averaging all the power draw whenever it needs to draw, and saves it to a json, averaging it with many others, providing an accurate prediction. The app gives the best forecast when you use the watch relatively similar per day.
+When you install this widget for the first time, or clear the data, it will also install the [`smartbatt`](https://banglejs.com/apps/?id=smartbatt) module as a dependency. As it learns your battery usage for the first time the forecast will fluctate, and will not be reliable for a while. As it compunds many drainage values together,  it will keep learning, and provide better predictions.
+The module learns by averaging all the battery drainage over a period of time, and saves it to a json, averaging it with many others, providing an accurate prediction. The module gives the best forecast when you use the watch relatively similar per day.
 
 Tap on the widget to show the battery percentage. It will go back to the days left after 3 seconds.
-## Settings
-* Clear Data - Clears the learned data. Useful when you change something fundamental that affects battery usage. (eg. New clock, turn on GPS daily, LCD backlight setting changes.)
+
+When charging, only the percentage is shown.
 ## Creator
 RKBoss6