Update MIT-LICENSE to keep original info. (#253)

MIT-LICENSE

@@ -1,3 +1,4 @@
+Copyright (c) 2012-2019 Georg Ledermann
 Copyright (c) 2019 Jason Lee
 
 Permission is hereby granted, free of charge, to any person obtaining
@@ -17,4 +18,4 @@ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOa AND
 NONINFRINGEMENT. IN NO EVENT SaALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.