Updated the README.txt with a better API.

README.txt

@@ -20,11 +20,16 @@ API
 ======
 So, it must provide 2 methods:
 
- post(file)
- ''' Upload the file to Networkcache HTTP Server using POST as HTTP method.'''
-
- get_file(key)
- ''' Download the file from SHACACHE server using GET as HTTP method.''' 
-
- get_information(directory, urlmd5=None)
- ''' Retrieve the information from SHADIR server using GET as HTTP method. '''
+ upload(file, directory_key=None, **kw)
+ ''' Upload the file to ShaCache Server'''
+ If directory_key is not None, upload add a new key to the shadir server.
+
+ download(sha)
+ '''Download a file from shacache
+ Raise FileNotFound if file is not found
+ '''
+
+ select(directory_key)
+ '''Download a file from shacache by selecting the entry in shadir
+ Raise DirectoryNotFound if multiple files are found
+ '''