Update README.md

README.md

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 # tripper
 Convert data from SharedStreet's trip-simulator into Kepler.gl input
+
+## Installation
+Clone the repo and install with `npm install`
+
+## Usage
+### 1. Generate Trips 
+Generate GPS Temeletry with [trip-simulator](https://github.com/sharedstreets/trip-simulator). For detailed explanation see [Use](https://github.com/sharedstreets/trip-simulator#use).
+
+```
+trip-simulator \
+  --config scooter \
+  --pbf nash.osm.pbf \
+  --graph nash.osrm \
+  --agents 100 \
+  --start 1563122921000 \
+  --seconds 86400 \
+  --traces ./traces.json \
+  --probes ./probes.json \
+  --changes ./changes.json \
+  --trips ./trips.json
+```
+
+### 2. Convert simulated trips with tripper
+Run tripper with `trips.json` as input file and specify an output filepath:
+
+```
+node tripper --input="./trips.json" --output="./parsed.json"
+```
+
+### 3. Use with kepler.gl
+Upload `parsed.json` to [kepler.gl](https://kepler.gl/demo) or use with local instance.
+