Fixed USAGE and readme that no longer reflected correct program invocation

README.md

@@ -31,7 +31,7 @@ nimble install
 
 Launching the interpreter is as simple as :
 ```
-nimfunge98 -f something.b98
+nimfunge98 something.b98
 ```
 
 The interpreter will then load and execute the specified Funge-98 program until the program normally terminates or is interrupted or killed.

nimfunge98.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version       = "1.0.0"
+version       = "1.0.1"
 author        = "Julien Dessaux"
 description   = "A Funge-98 interpreter written in nim"
 license       = "EUPL-1.2"

src/nimfunge98.nim

@@ -8,10 +8,10 @@ import strformat
 
 proc Usage(i: int = 0) =
   let filename = getAppFilename().extractFilename()
-  echo fmt"""Usage of {filename}:
-    -f string  b98 file to interpret
-    -h         display this help message
-  """
+  echo fmt"""Usage: {filename} [FLAGS] filename
+
+FLAGS:
+  -h         display this help message"""
   if i != 0:
     quit i
 
@@ -28,6 +28,7 @@ for kind, key, value in getOpt():
       case key
         of "h":
           Usage()
+          quit 0
         else:
           echo "Unknown option: ", key
           Usage(1)