improve readme (#90)

Simplify the message in the first section of the project README to focus
on the main features of the library rather than just the types of
targets that are supported.

README.md

@@ -7,20 +7,22 @@
 [![Apache 2.0 License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.0-ff69b4.svg)](https://github.com/goatshriek/stumpless/blob/latest/docs/CODE_OF_CONDUCT.md)
 
-A logging library built with a
-[vision](https://github.com/goatshriek/stumpless/blob/latest/docs/vision.md):
-a rich and intuitive interface, standards compliance, fast performance, and a
-small footprint.
-
-Currently stumpless offers [standardized](https://tools.ietf.org/html/rfc5424)
-logging to the following targets:
- * network servers ([UDP](https://tools.ietf.org/html/rfc5426) or
-   [TCP](https://tools.ietf.org/html/rfc6587) over IPv4 or IPv6)
- * files
- * streams
- * Linux sockets
- * the Windows Event Log
- * character buffers
+A C logging library built for high performance and a rich feature set. Check
+out our
+[vision](https://github.com/goatshriek/stumpless/blob/latest/docs/vision.md)
+to see what we are all about!
+
+Stumpless offers a robust set of features to make logging in C faster and
+easier:
+ * cross-platform builds on Linux, Windows, MacOSX, Cygwin, and more
+ * easy logging to network targets like Splunk or rsyslog servers
+ * logging that can be removed at compile-time for zero performance impact
+ * interoperability with standard syslog daemons and library functions
+ * an extensive unit testing suite and continuous integration
+ * easy-access
+   [documentation](https://goatshriek.github.io/stumpless/docs/c/latest/index.html)
+   and
+   [examples](https://github.com/goatshriek/stumpless/tree/latest/docs/examples)
 
 ## Basic Logging Functions
 The simplest way to get started is to use the `stumplog` function as a direct