created simple user interface and json input file

src/UserInterface/testInput.json

@@ -0,0 +1,30 @@
+{
+	"PedestrianSimulator":{
+		"version":0.1,
+		"date":{
+			"day":9,
+			"month":10,
+			"year":2015			
+		},
+		"data":{
+			"timePropagationParameters":{
+				"description":"",
+				"dt":{
+					"value":0.001,
+					"description":"Time spacing [s]"
+				},
+				"tmax":{
+					"description":"Maximum propagation time [s]",
+					"value":10.0
+				},
+				"t":{
+					"value":0.0,
+					"description":"Initial timing [s]"
+				}				
+			}
+
+		}
+
+	}
+
+}

src/userInterface.py

@@ -0,0 +1,56 @@
+#!/usr/bin/python
+
+import json
+from pprint import pprint
+import os
+from msilib import Control
+import numpy as np
+
+
+class Reader(object):
+
+    def setTimePropagationParameters(self):
+        tmax = self.__allData["PedestrianSimulator"][
+            "data"]["timePropagationParameters"]["tmax"]["value"]
+        dt = self.__allData["PedestrianSimulator"][
+            "data"]["timePropagationParameters"]["dt"]["value"]
+        time = np.linspace(0., tmax, int(tmax / dt) + 1)
+        self.__allData["PedestrianSimulator"]["data"][
+            "timePropagationParameters"]["time"] = {}
+        self.__allData["PedestrianSimulator"]["data"][
+            "timePropagationParameters"]["time"]["value"] = time
+        self.__allData["PedestrianSimulator"]["data"][
+            "timePropagationParameters"]["time"]["description"] = "time grid"
+
+    def Model(self):
+        self.readData()
+        self.setTimePropagationParameters()
+
+    def Control(self):
+        pass
+
+    def View(self):
+        print "so far:"
+        pprint(self.__allData)
+
+    def __init__(self, inputFilename="UserInterface/testInput.json"):
+        print "Pedestrian Simulator started at", os.getcwd()
+        if inputFilename == None:
+            raise SystemExit("Not input file was specified!")
+
+        self.__inputFilename = inputFilename
+
+        self.Model()
+        self.View()
+
+    def readData(self):
+        print "Reading input file ", self.__inputFilename
+        with open(self.__inputFilename) as data_file:
+            data = json.load(data_file)
+
+            self.__allData = data
+
+
+if __name__ == "__main__":
+
+    R1 = Reader()