Create README.md

Author: RKBoss6

apps/widsmartbatt/README.md

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+# Smart Battery Widget
+Shows battery in terms of days (21 days, 12 hours), and learns from your daily usage to give better 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.
+
+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.)
+## Creator
+RKBoss6