Spectre/System/File: adding readString()

include/Spectre/System/File.h

@@ -88,6 +88,9 @@ public :
 		return read((void*) &buffer[0], s) == s;
 	}
 
+	// Read contents into str until null (\0)
+	size_t readString(std::string &str);
+
 	// Write data to file at the current position.
 	// Returns -1 if an error occured. Otherwice the number of bytes written is returned.
 	size_t write(const void *ptr, size_t size);