updated

README.md

@@ -5,12 +5,18 @@
 * If just latitude and longitude are provided, the timestamp is calculated automatically for this moment.
 * If first- and last name of a person are provided, their birth-location coordinates and birth-time should be the geospatial arguments
 
-example:
+## Installation
+
+```
+pip install -r requirements.txt
+```
+
+## Example:
 
 ```
 sigilize.py 52.4852321 13.4355856 322813800 "Sublunar" "Space"
 ```
 
-result:
+## Result:
 
 ![Result](Space_Sublunar.svg)