Fix Chinese pdf links and update readme for Chinese version

Author: miloyip

game-programmer-zh-cn.dot

@@ -25,7 +25,7 @@ digraph {
 
             toctop [fixedsize=true,width=8, height=3, shape=plaintext,label=<
                 <TABLE BORDER="0">
-<TR><TD><FONT FACE="Futura" POINT-SIZE="40">游戏程序员的</FONT></TD></TR><TR><TD><FONT FACE="Futura" POINT-SIZE="40">学习之路</FONT></TD></TR>                <TR><TD><FONT FACE="Futura" POINT-SIZE="20">Milo Yip<br/>2016/12/8</FONT></TD></TR>
+<TR><TD><FONT FACE="Futura" POINT-SIZE="40">游戏程序员的</FONT></TD></TR><TR><TD><FONT FACE="Futura" POINT-SIZE="40">学习之路</FONT></TD></TR>                <TR><TD><FONT FACE="Futura" POINT-SIZE="20">Milo Yip<br/>2016/12/17</FONT></TD></TR>
                 <TR><TD>https://github.com/miloyip/game-programmer</TD></TR>
                 </TABLE>
             > URL="https://github.com/miloyip/game-programmer"]
@@ -651,7 +651,7 @@ digraph {
         gamephysicspearls [label=<<TABLE BORDER="0" CELLSPACING="0"><TR><TD WIDTH="100" HEIGHT="100" FIXEDSIZE="TRUE"><IMG SCALE="TRUE" SRC="images/gamephysicspearls.jpg"/></TD></TR><TR><TD>Game Physics Pearls<br/>(2010)</TD></TR></TABLE>> URL="https://www.amazon.com/dp/1568814747/"]
 
         taofluidanimation [label=<<TABLE BORDER="0" CELLSPACING="0"><TR><TD WIDTH="100" HEIGHT="100" FIXEDSIZE="TRUE"><IMG SCALE="TRUE" SRC="images/taofluidanimation.jpg"/></TD></TR><TR><TD>The Art of<br/>Fluid Animation (2015)</TD></TR></TABLE>> URL="https://www.amazon.com/dp/1498700209/"]
-        fluidsimulationforcg2 [label=<<TABLE BORDER="0" CELLSPACING="0"><TR><TD WIDTH="100" HEIGHT="100" FIXEDSIZE="TRUE"><IMG SCALE="TRUE" SRC="images/fluidsimulationforcg2.jpg"/></TD></TR><TR><TD>Fluid Animation<br/>for Computer Graphics<br/>2nd Ed (2015)</TD></TR></TABLE>> URL="https://www.amazon.com/dp/1482232839/"]
+        fluidsimulationforcg2 [label=<<TABLE BORDER="0" CELLSPACING="0"><TR><TD WIDTH="100" HEIGHT="100" FIXEDSIZE="TRUE"><IMG SCALE="TRUE" SRC="images/fluidsimulationforcg2.jpg"/></TD></TR><TR><TD>Fluid Simulation<br/>for Computer Graphics<br/>2nd Ed (2015)</TD></TR></TABLE>> URL="https://www.amazon.com/dp/1482232839/"]
 
         animbegin -> { characteranimation; rt3dcharacteranimation } -> computeranimation3 -> animadvanced
         animadvanced -> { gameik; physicsbasedanimation; rtcameras}

game-programmer-zh-cn.pdf

@@ -27,7 +27,7 @@ digraph {
                 <TABLE BORDER="0">
                 <TR><TD><FONT FACE="Futura" POINT-SIZE="40">A STUDY PATH FOR</FONT></TD></TR>
                 <TR><TD><FONT FACE="Futura-Bold" POINT-SIZE="40">GAME PROGRAMMER</FONT></TD></TR>
-                <TR><TD><FONT FACE="Futura" POINT-SIZE="20">Milo Yip<br/>2016/12/8</FONT></TD></TR>
+                <TR><TD><FONT FACE="Futura" POINT-SIZE="20">Milo Yip<br/>2016/12/17</FONT></TD></TR>
                 <TR><TD>https://github.com/miloyip/game-programmer</TD></TR>
                 </TABLE>
             > URL="https://github.com/miloyip/game-programmer"]

game-programmer.dot

@@ -1,4 +1,5 @@
-[svg](https://miloyip.github.io/game-programmer/game-programmer.svg) [pdf](https://miloyip.github.io/game-programmer/game-programmer.pdf)
+* English [svg](https://miloyip.github.io/game-programmer/game-programmer.svg) [pdf](https://miloyip.github.io/game-programmer/game-programmer.pdf) [jpg](https://miloyip.github.io/game-programmer/game-programmer.jpg) [png](https://miloyip.github.io/game-programmer/game-programmer.png)
+* 简体中文 [svg](https://miloyip.github.io/game-programmer/game-programmer-zh-cn.svg) [pdf](https://miloyip.github.io/game-programmer/game-programmer-zh-cn.pdf) [jpg](https://miloyip.github.io/game-programmer/game-programmer-zh-cn.jpg) [png](https://miloyip.github.io/game-programmer/game-programmer-zh-cn.png) by @tkchu
 
 ![ ](game-programmer.jpg)