Escape paths (#72)

* feature: escape filename

* feature: escape keys

Author: g105b

README.md

@@ -29,7 +29,7 @@ The first time we see the IP address will have to make an HTTP call, but subsequ
 
 ```php
 $ipAddress = $_SERVER["REMOTE_ADDR"];
-$fileCache = new Gt\FileCache\Cache("/tmp/ip-address-geolocation");
+$fileCache = new GT\FileCache\Cache("/tmp/ip-address-geolocation");
 
 // This function uses file_get_contents to contact the remote server
 // at ipinfo.io, a costly operation. We will pass the lookup function
@@ -44,7 +44,7 @@ $location = $fileCache->get("lat-lon", $lookup);
 echo "Your location is: $location";
 ```
 
-If generating a fresh value fails, throw `Gt\FileCache\CacheValueGenerationException`
+If generating a fresh value fails, throw `GT\FileCache\CacheValueGenerationException`
 from the callback. The cache will ignore that failure and skip writing a replacement
 value, which leaves `null` available as a legitimate cached value.
 

composer.json

@@ -40,13 +40,14 @@
 
 	"autoload": {
 		"psr-4": {
+			"GT\\FileCache\\": "./src",
 			"Gt\\FileCache\\": "./src"
 		}
 	},
 
 	"autoload-dev": {
 		"psr-4": {
-			"Gt\\FileCache\\Test\\": "./test/phpunit"
+			"GT\\FileCache\\Test\\": "./test/phpunit"
 		}
 	},