Search by pattern based on #24

Consider allowing starting with``/``, ``./``, ``~`` or any string with a
``/`` within to be treated as pulling by file path.

```sh
$ vcspull ./.config
$ vcspull ./.config/*
$ vcspull ~/*
```

If starting with ``http``, ``git``, ``file``, try to find match with vcs
url
```sh
$ vcspull https://github.com/tony/vcspull.git
```

(done) Default, match repo name
```sh
$ vcspull vim
```

vcspull/cli.py

@@ -107,6 +107,14 @@ def cli(log_level, repos):
     configs = find_configs(include_home=True)
     configs = load_configs(configs)
     for repo in repos:
+        dirmatch, repomatch = None, None
+        if any(repo.startswith(n) for n in ['./', '/', '~', '$HOME']):
+            dirmatch = repo
+            repo = None
+        elif any(repo.startswith(n) for n in ['http', 'git', 'svn']):
+            dirmatch = repo
+            repo = None
+
         repos = get_repos(
             configs,
             dirmatch=None,