* [Slim] Add Basic Authentication Middleware
User needs to add own implementation to verifyCredentials method in AuthBasic.php.
* [Slim] Update README template
I'm not sure about `middlewareSrcPath` variable. I'll fix it in following PRs
if path is broken.
Hope that notice in README catches attention and most of users will read it.
* Revert "[Slim] Update README template"
This reverts commit 204ee02fd853feb3cc19db5658348c7fee6ca3f5.
* Revert "[Slim] Add Basic Authentication Middleware"
This reverts commit 6a8e03079a70213797896e660b7e7fa1894da0a6.
* [Slim] Add "tuupola/slim-basic-auth" package
Package "tuupola/slim-basic-auth" 3.1.0 requires PHP 7, that's why I
set it's version to ^3.0.0 in Composer. Minimum version will be
3.0.0-rc.1 which supports PHP 5.5. I've tested build with PHP 7, it
would be nice to check build with PHP 5.5 someday.
* [Slim] Update README template
Not sure about forward slash in path to SlimRouter class. I will fix it
in upcoming PRs if necessary.
* [Slim] Refresh samples
