update license and readme

Author: RSDuck

LICENSE.thirdparty

@@ -140,4 +140,11 @@ hx-hbmenu:
  *   OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA
  *   OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  *   ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
+ */
+
+Checkpoint:
+GNU GPL 3.0 Copyright (C) 2017-2018 Bernardo Giordano
+The GPL is rather long, so I don't include it here.
+See here:
+https://github.com/BernardoGiordano/Checkpoint/blob/master/LICENSE
+or ask Richard Stallman for a copy

Makefile

@@ -51,7 +51,7 @@ CFLAGS	:=	-g -Wall -Ofast -ffunction-sections \
 			`freetype-config --cflags`
 
 CFLAGS	+=	$(INCLUDE) -D__SWITCH__ -DTILED_RENDERING -DBRANCHLESS_GBA_GFX \
-	-DUSE_FRAME_SKIP -DNXLINK_STDIO#-DTHREADED_RENDERER
+	-DUSE_FRAME_SKIP #-DNXLINK_STDIO#-DTHREADED_RENDERER
 
 CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
 

readme.md

@@ -22,6 +22,8 @@ Needs [libnx](https://github.com/switchbrew/libnx) and [devkitPro](http://devkit
 
 ## Speed hack
 
+NOTE: some things don't apply anymore or were inaccurate observations
+
 Before implementing this "speed hack" the emulator had regular slowdowns. Although I found out about these things by myself, these things might be common knowledge to emulator devs. These were the things which apparently slowed the emulator down:
 - The thread/core it's running on
 - The VSync