feat: Added support for remote files (via ssh).

docs/cli/envr_restore.md

@@ -10,12 +10,17 @@ envr restore <path> [flags]
 
 * `path` — Path to .env file to restore
 
+Remote files are restored over SSH using an atomic replacement. If the remote
+file has changed since it was backed up, restoration is refused unless
+`--force` is specified.
+
 ### Options
 
 ```
   -h, --help          show this documentation
   -c, --config-file   config file (default "~/.envr/config.json")
       --color         Whether or not to colorize output (default 'auto')
+  -f, --force         Overwrite existing config
 ```
 
 ### SEE ALSO

docs/cli/envr_sync.md

@@ -2,6 +2,10 @@
 
 Update or restore your env backups
 
+For both local and remote files, `sync` backs up changed file contents and
+restores missing files from the backup. Remote SSH and permission errors are
+reported instead of being treated as missing files.
+
 ```
 envr sync [flags]
 ```