update docs

Author: puredanger

docs/clojure.tools.tools.api.html

@@ -19,6 +19,8 @@
 If :lib and :as are provided, the latest version of that lib will be installed
 with that tool name, replacing any existing tool by that name.
 If no args are provided, install the newest version of all tools.
+Optionally :coord may be provided for information not inferrable from the
+lib name, such as a custom git url.
 
 The latest version is determined by listing the versions in semver order,
 filtering out versions with special strings, and choosing the last one.
@@ -32,6 +34,7 @@
 Options:
   :tool tool-name - currently installed tool
   :lib lib-name - mvn lib or git lib with inferrable url
+  :coord - coord map if needed (note: git coords may omit sha)
   :as - tool name
 
 Example: