Merge pull request git-lfs#1675 from git-lfs/filter-process-docs

docs/man: document git-lfs-filter-process(1)

Author: ttaylorr

docs/man/git-lfs-filter-process.1.ronn

@@ -0,0 +1,31 @@
+git-lfs-filter-process(1) -- Git filter process that converts between pointer and actual content
+===========================================================================================
+
+## SYNOPSIS
+
+`git lfs filter-process`
+`git lfs filter-process --skip`
+
+## DESCRIPTION
+
+Implement the Git process filter API, exchanging handshake messages and then
+accepting and responding to requests to either clean or smudge a file.
+
+filter-process is always run by Git's filter process, and is configured by the
+repository's Git attributes.
+
+The filter process uses Git's pkt-line protocol to communicate, and is
+documented in detail in gitattributes(5).
+
+## OPTIONS
+
+Without any options, filter-process accepts and responds to requests normally.
+
+* `--skip`:
+    Skip automatic downloading of objects on clone or pull.
+
+## SEE ALSO
+
+git-lfs-clean(1), git-lfs-install(1), git-lfs-smudge(1), gitattributes(5).
+
+Part of the git-lfs(1) suite.