Create input preprocessor

input-preprocessor.md

@@ -0,0 +1,25 @@
+itape.py is an input preprocessor to support run over loop with command line argument and compatibility.
+
+It has a hard-coded dictionary of default values for all arguments. 
+
+The default values in dictionary can be override with provided input file.
+
+
+
+## Use case 1 - Test Run
+```
+$ python itape.py | ./ex -
+```
+Run 1-D laminar flame calculation with hard-coded default values.
+
+## Use case 2 - Compatibility Run
+```
+$ python itape.py --default SOME_OLD_INPUTFILE | ./ex -
+```
+Run 1-D laminar flame calculation with old incompatible input file.
+
+## Use case 3 - Argument Run
+```
+$ python itape.py --dt 0.0001 | ./ex -
+```
+Run 1-D laminar flame calculation with hard-coded default values except dt.