Update README

Author: tarleb

README.md

@@ -1,34 +1,26 @@
 hslua-aeson
 ===========
 
-[![travis build status]](https://travis-ci.org/hslua/hslua-aeson)
 [![MIT License]](./LICENSE)
 
+Pushes and retrieves aeson `Value`s to and from the Lua stack.
 
-Glue to hslua for aeson values.
+- `Null` values are encoded as a special value (stored in the
+  registry field `HSLUA_AESON_NULL`).
 
-This provides a `StackValue` instance for aeson's `Value` type. The following
-conventions are used:
+- Objects are converted to string-indexed tables.
 
-- `Null` values are encoded as a special value (stored in the registry field
-  `HSLUA_AESON_NULL`). Using `nil` would cause problems with null-containing
-  arrays.
+- Arrays are converted to sequence tables. Array-length is
+  included as the value at index 0. This makes it possible to
+  distinguish between empty arrays and empty objects.
 
-- Objects are converted to tables in a straight-forward way.
-
-- Arrays are converted to Lua tables. Array-length is included as the value at
-  index 0. This makes it possible to distinguish between empty arrays and empty
-  objects.
-
-- JSON numbers are converted to Lua numbers (usually doubles), which can cause
-  a loss of precision.
+- JSON numbers are converted to Lua numbers (usually doubles).
 
 License
 -------
 
-This project is licensed under the liberal MIT license, the same license under
-which hslua and lua itself are published. See the [LICENSE](./LICENSE) file for
-details.
+This project is licensed under the MIT license, the same license
+under which hslua and lua itself are published. See the
+[LICENSE](./LICENSE) file for details.
 
-[travis build status]: https://img.shields.io/travis/hslua/hslua-aeson/master.svg?style=flat-square
 [MIT License]: https://img.shields.io/github/license/hslua/hslua-aeson.svg?style=flat-square