Add updates to sstv to allow for simulation

sstv.py

@@ -1,9 +1,15 @@
 from shutil import copyfile
 from PIL import Image, ImageFont, ImageDraw
 from pysstv import color
-from picamera import PiCamera
+
 import logging as log
 
+try:
+    from picamera import PiCamera
+except ModuleNotFoundError:
+    log.info("Running in simulator mode")
+
+
 def take_photo():
     # This def is meant to take a photograph from the robot, 
     # it should include all steps and error checking to raise the mast
@@ -16,9 +22,12 @@ def take_photo():
     # Software to take the photo should be here
     #copyfile('photos/camera_latest.jpg', 'working/working.jpg')
     log.debug('Initalizing camera.')
-    camera = PiCamera()
-    log.info('Saving photo.')
-    camera.capture('working/working.jpg')
+    try:
+        camera = PiCamera()
+        log.info('Saving photo.')
+        camera.capture('working/working.jpg')
+    except NameError:
+        log.info("Running in simulator mode, not replacing test pattern")
 
 def mark_photo():
     log.info('Opening photo for viewing.')