Added documentation

types/nodegit/str-array.d.ts

@@ -1,6 +1,32 @@
 export class Strarray {
+    /**
+     *
+     *
+     * @param {Strarray} src
+     * @returns {number}
+     *
+     * @memberof Strarray
+     */
     copy(src: Strarray): number;
+    /**
+     *
+     *
+     *
+     * @memberof Strarray
+     */
     free(): void;
+    /**
+     *
+     *
+     * @type {string[]}
+     * @memberof Strarray
+     */
     strings: string[];
+    /**
+     *
+     *
+     * @type {number}
+     * @memberof Strarray
+     */
     count: number;
 }