Update usage help.

README.md

@@ -7,12 +7,15 @@ [email protected]
 
 3-clause BSD license ("New BSD License")
 
+Home page: https://idrassi.github.io/DirHash/
+
 Usage
 ------------
 
-DirHash.exe DirectoryOrFilePath [HashAlgo] [-t ResultFileName] [-nowait]
+DirHash.exe DirectoryOrFilePath [HashAlgo] [-t ResultFileName] [-nowait] [-hashnames]
 
 Possible values for HashAlgo (not case sensitive):
+- MD5
 - SHA1
 - SHA256
 - SHA384
@@ -23,3 +26,5 @@ If HashAlgo is not specified, SHA-1 is used by default.
 ResultFileName specifies an optional text file where the result will be appended.
 
 if -nowait is specified, program will exit immediately after displaying the hash result. Otherwise, it prompts user to hit a key before it exits.
+
+if -hashnames is specified, the case sensitive names of the files and directories will be included in the hash computation. Otherwise, only files content is used.