Updated sftp open documentation, example and readme for compatibility.

Resolves #13.

README.rst

@@ -47,7 +47,7 @@ API Feature Set
 ________________
 
 
-Currently the vast majority of the `libssh2`_ API has been implemented with only few exceptions.
+At this time all of the `libssh2`_ API has been implemented up to version ``1.8.0``.
 
 Complete example scripts for various operations can be found in the `examples directory`_.
 
@@ -179,9 +179,12 @@ SFTP Read
 
 .. code-block:: python
 
+   from ssh2.sftp import LIBSSH2_FXF_READ, LIBSSH2_SFTP_S_IRUSR
+
    sftp = session.sftp_init()
-   with sftp.open(<remote file to read>, 0, 0) as remote_fh, \
-           open(<file to write>, 'wb') as local_fh:
+   with sftp.open(<remote file to read>,
+		  LIBSSH2_FXF_READ, LIBSSH2_SFTP_S_IRUSR) as remote_fh, \
+           open(<local file to write>, 'wb') as local_fh:
        for size, data in remote_fh:
            local_fh.write(data)
 
@@ -247,6 +250,7 @@ ________________________________________
 * SCP send and receive
 * Listener for port forwarding
 * Subsystem support
+* Host key checking and manipulation
 
 And more, as per `libssh2`_ functionality.
 

examples/sftp_read.py

@@ -12,6 +12,7 @@
 from datetime import datetime
 
 from ssh2.session import Session
+from ssh2.sftp import LIBSSH2_FXF_READ, LIBSSH2_SFTP_S_IRUSR
 
 
 USERNAME = pwd.getpwuid(os.geteuid()).pw_name
@@ -37,7 +38,7 @@ def main():
     sftp = s.sftp_init()
     now = datetime.now()
     print("Starting read for remote file %s" % (args.file,))
-    with sftp.open(args.file, 0, 0) as fh:
+    with sftp.open(args.file, LIBSSH2_FXF_READ, LIBSSH2_SFTP_S_IRUSR) as fh:
         for size, data in fh:
             pass
     print("Finished file read in %s" % (datetime.now() - now,))

ssh2/sftp.pyx

@@ -155,18 +155,18 @@ cdef class SFTP:
 
         :param filename: Name of file to open.
         :type filename: str
-        :param flags: One or more LIBSSH2_FXF_* flags. Can be ``0`` for
-          reading.
+        :param flags: One or more LIBSSH2_FXF_* flags.
 
           Eg for reading flags is ``LIBSSH2_FXF_READ``,
 
           for writing ``LIBSSH2_FXF_WRITE``,
 
           for both ``LIBSSH2_FXF_READ`` | ``LIBSSH2_FXF_WRITE``.
         :type flags: int
-        :param mode: File permissions mode. ``0`` for reading.
+        :param mode: File permissions mode. ``LIBSSH2_SFTP_S_IRUSR`` for
+          reading.
 
-          For writing one or more LIBSSH2_SFTP_S_* flags.
+          For writing one or more ``LIBSSH2_SFTP_S_*`` flags.
 
           Eg, for 664 permission mask (read/write owner/group, read other),