added README in metadata

apps/phystrax/README.md

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+# Capstone Wearable
 Research has shown that active learning approaches in classrooms, which emphasize the construction of knowledge and reflection on the learning process, significantly enhance the student learning experience and lead to better success in the classroom. The Active Learning Initiative at the University of Georgia focuses on instructor development, student engagement, and classroom enhancement.
 
 This project focuses specifically on classroom enhancement to create a device that will enhance the learning experience of students in physiology classes by allowing them to learn about and analyze their physiological patterns. The project must adhere to the constraints of a one-hundred dollar per watch budget, the ability to be scaled to a classroom of three-hundred twenty students, and provide data with at least 80% accuracy. By giving students access to their heart rate (HR) and heart rate variability (HRV) data, the goal is that students can better understand the function of the heart as well as the physiological conditions that can be affected by the heart. The original concept was to develop a wrist-wearable, screen-less device featuring sensors that detect a user’s heart rate by emitting LEDs that detect the expansion of blood vessels in the wrist and the quantity of light transmitted in the vascular bed to obtain heart rate and blood oxygen data and the heart rate variability calculated using an algorithm that takes the root-mean-square of interbeat intervals between successive heartbeats.

apps/phystrax/metadata.json

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   "description": "Tracking physiological measurements to support active learning in classrooms",
   "tags": "health",
   "interface": "interface.html",
+  "readme": "README.md",
   "supports": ["BANGLEJS2"],
   "storage": [
     {"name":"phystrax.app.js","url":"app.js"},