Fix gitattributes wildcards not applying to subfolders

Gitattributes patterns like `*.ext` will now match all files with that pattern in all subfolders, instead of only in root.

Resolves #17

Author: Nixinova

src/index.ts

@@ -132,7 +132,7 @@ async function analyse(input?: string | string[], opts: T.Options = {}): Promise
 							forcedLang = overrideLang[0];
 						}
 					}
-					const fullPath = relPath(folder) + '/' + path;
+					const fullPath = paths.join(relPath(folder), path);
 					overrides[fullPath] = forcedLang;
 				}
 			}

test/expected.json

@@ -1,7 +1,7 @@
 {
 	"files": {
-		"count": 7,
-		"bytes": 46,
+		"count": 8,
+		"bytes": 47,
 		"results": {
 			"~/al.al": "Perl",
 			"~/file.txt": "JavaScript",
@@ -14,10 +14,10 @@
 	},
 	"languages": {
 		"count": 5,
-		"bytes": 37,
+		"bytes": 38,
 		"results": {
 			"Perl": { "type": "programming", "bytes": 0, "color": "#0298c3" },
-			"JavaScript": { "type": "programming", "bytes": 22, "color": "#f1e05a" },
+			"JavaScript": { "type": "programming", "bytes": 23, "color": "#f1e05a" },
 			"Text": { "type": "prose", "bytes": 0 },
 			"C++": { "type": "programming", "bytes": 15, "color": "#f34b7d" },
 			"TOML": { "type": "data", "bytes": 0, "color": "#9c4221" }

test/samples/folder/file.txt

@@ -0,0 +1 @@
+1