Create a dedicated man page containing all config options

docs/man/git-lfs-config.1.ronn

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+git-lfs-config(1) -- Configuration options for git-lfs
+======================================================
+
+## CONFIGURATION FILES
+
+git-lfs uses the same configuration files as git-config(1) with the same
+precedence. Most options pertaining to git-lfs are contained in the `[lfs]`
+section, meaning they all named `lfs.foo` or similar, although Occasionally an 
+lfs option can be scoped inside the configuration for a remote.
+
+## LIST OF OPTIONS
+
+### General settings
+
+* `lfs.url` / `<remote>.lfsurl`
+  
+  The url used to call the Git LFS remote API. Default blank (derive from clone
+  URL).
+  
+* `lfs.concurrenttransfers`
+  
+  The number of concurrent uploads/downloads. Default 3.
+
+* `lfs.batch`
+  
+  Whether to use the batch API instead of requesting objects individually.
+  Default false.
+
+### Fetch settings
+
+* `lfs.fetchinclude`
+
+  When fetching, only download objects which match any entry on this 
+  comma-separated list of paths/filenames. Wildcard matching is as per 
+  git-ignore(1).
+
+* `lfs.fetchexclude`
+
+  When fetching, do not download objects which match any item on this
+  comma-separated list of paths/filenames. Wildcard matching is as per 
+  git-ignore(1).
+
+
+* `lfs.fetchrecentrefsdays`
+  
+  If non-zero, fetches refs which have commits within N days of the current 
+  date. Only local refs are included unless lfs.fetchrecentremoterefs is true.
+  The default is 7 days.
+
+* `lfs.fetchrecentremoterefs`
+  
+  If true, fetches remote refs as well as local refs in the recent window. This 
+  is useful to fetch objects for remote branches you might want to check out 
+  later, but means more refs are downloaded. The default is false.
+
+* `lfs.fetchrecentcommitsdays`
+  
+  In addition to fetching at refs, also fetches previous changes made within N 
+  days of the latest commit on the ref. This is useful if you're often reviewing
+  recent changes. The default is 0 (no previous changes).
+
+* `lfs.fetchrecentalways`
+  
+  Always operate as if --recent was included in a `git lfs fetch` call. Default
+  false.
+
+### Extensions
+
+* `lfs.extension.<name>.<setting>`
+
+  Git LFS extensions enable the manipulation of files streams during smudge and 
+  clean. `name` groups the settings for a single extension, and the settings
+  are:
+  * `clean` The command which runs when files are added to the index
+  * `smudge` The command which runs when files are written to the working copy
+  * `priority` The order of this extension compared to others
+
+### Other settings
+
+* `lfs.<url>.access`
+  
+  Note: this setting is normally set by LFS itself on receiving a 401 response
+  (authentication required), you don't normally need to set it manually. 
+
+  If set to "private" then credentials will be requested before making batch
+  requests to this url, otherwise a public request will initially be attempted. 
+
+## SEE ALSO
+
+git-config(1), git-lfs-init(1), gitattributes(5).
+
+Part of the git-lfs(1) suite.