Updated the usage function, to be more explicit

scantopdf

@@ -40,11 +40,14 @@ usage () {
     cat << EOF
 scantopdf - A quick bash script that wraps around tesseract to make book scans "editable"
 
-Usage:  scantopdf [-v|--verbose] input.pdf
+Usage:  scantopdf [-v|--verbose] file.pdf
+        scantopdf [-v|--verbose] "file with spaces.pdf"
         scantopdf [-h|-?|--help]
 
 Options:
-    input.pdf                           the file you want to make editable
+    file.pdf                            the file you want to make editable (make
+                                        sure to put quotes " around the file
+                                        name if the filename has spaces)
 
 Optional arguments:
     -v, --verbose                       print each step the script passes through