Update readme and changelog for v0.10.10

dist/CHANGES.txt

 CHANGES
 
+0.10.10 (October 9, 2017)
+- Built with Go 1.9.1
+- Removed Caddy-Sponsors header
+- New 'on' directive that deprecates 'startup' and 'shutdown'
+- Changed CASE_SENSITIVE_PATH default to false
+- fastcgi: Support for SRV upstreams
+- redir: Rules with if statements are not checked for duplicates
+- Several minor bug fixes
+
+
 0.10.9 (September 12, 2017)
 - EULA bundled with official binaries
 - Caddy-Sponsors header to indicate personal-use license

dist/README.txt

-CADDY 0.10.9
+CADDY 0.10.10
 
 Website
 	https://caddyserver.com
@@ -14,8 +14,8 @@ Source Code
 	https://github.com/caddyserver
 
 
-For instructions on using Caddy, please see the user guide on
-the website. For a list of what's new in this version, see
+For instructions on using Caddy, please see the docs on the
+website. For a list of what's new in this version, see
 CHANGES.txt.
 
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