Created .gitignore; Added basic checks for data input in main.py.

.gitignore

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+file.jpg

main.py

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+import subprocess
+
+import os
+
+from os.path import expanduser
+home = expanduser("~")
+
+mainCategory = ""
+
+subCategory = ""
+
+pageNumber = -1
+
+
+while mainCategory == "":
+    try:
+        mainCategory = str(input("Main Category Of Document: "))
+        
+    except:
+        
+        mainCategory = ""
+
+    if mainCategory == "":
+
+