增加中文注释

Makefile

@@ -1,4 +1,4 @@
-LDFLAGS=-lcurses
+LDLIBS=-lcurses
 
 all: tinytetris
 

README.md

@@ -10,4 +10,80 @@ This is the 80x23 version. You control it with `a` (left), `d` (right), `w` (rot
 
 ### tinytetris-commented.cpp
 This one is almost identical to `tinytetris.cpp`, but not minified, and with some
-comments to make it easier to read (but it's still tricky to read in certain parts).
+comments to make it easier to read (but it's still tricky to read in certain parts).
+
+### How to build
+
+#### change Makefile
+
+Use __LDLIBS__ instead of __LDFLAGS__ in makefile #10
+
+otherwise,you will meet the misstaks as follow:
+```
+linux:~/code/other/tinytetris$ make
+g++   -lcurses  tinytetris.cpp   -o tinytetris
+/tmp/ccNKijAL.o: In function `F()':
+tinytetris.cpp:(.text+0xf7): undefined reference to `move'
+tinytetris.cpp:(.text+0x161): undefined reference to `stdscr'
+tinytetris.cpp:(.text+0x171): undefined reference to `wattr_on'
+tinytetris.cpp:(.text+0x184): undefined reference to `printw'
+tinytetris.cpp:(.text+0x19c): undefined reference to `stdscr'
+tinytetris.cpp:(.text+0x1ac): undefined reference to `wattr_off'
+tinytetris.cpp:(.text+0x1ce): undefined reference to `move'
+tinytetris.cpp:(.text+0x1e7): undefined reference to `printw'
+tinytetris.cpp:(.text+0x1ec): undefined reference to `refresh'
+/tmp/ccNKijAL.o: In function `L()':
+tinytetris.cpp:(.text+0x634): undefined reference to `stdscr'
+tinytetris.cpp:(.text+0x63c): undefined reference to `wgetch'
+/tmp/ccNKijAL.o: In function `main':
+tinytetris.cpp:(.text+0x83f): undefined reference to `initscr'
+tinytetris.cpp:(.text+0x844): undefined reference to `start_color'
+tinytetris.cpp:(.text+0x877): undefined reference to `init_pair'
+tinytetris.cpp:(.text+0x89c): undefined reference to `resizeterm'
+tinytetris.cpp:(.text+0x8a1): undefined reference to `noecho'
+tinytetris.cpp:(.text+0x8a8): undefined reference to `stdscr'
+tinytetris.cpp:(.text+0x8b5): undefined reference to `wtimeout'
+tinytetris.cpp:(.text+0x8bf): undefined reference to `curs_set'
+tinytetris.cpp:(.text+0x8c6): undefined reference to `stdscr'
+tinytetris.cpp:(.text+0x8d8): undefined reference to `box'
+tinytetris.cpp:(.text+0x8e2): undefined reference to `endwin'
+collect2: error: ld returned 1 exit status
+<builtin>: recipe for target 'tinytetris' failed
+make: *** [tinytetris] Error 1
+```
+
+#### install curses library
+I run in ubuntu 18.04:
+```
+sudo apt-get install libncurses5-dev
+```
+
+The document of ncurses, you can read it use __man__:
+```
+sudo apt-get install ncurses-doc 
+```
+
+you can build it with source:https://blog.csdn.net/damotiansheng/article/details/40106249
+
+if you want to build the project, you need do as follow:
+```
+gcc -o main main.c -lcurses
+```
+
+##### curses
+
+The introduce:
+1. https://www.ibm.com/support/knowledgecenter/en/ssw_aix_71/generalprogramming/curses.html
+2. https://blog.csdn.net/hainan89/article/details/16886375
+
+
+how to use curese:
+1. https://www.cnblogs.com/Chaobs/articles/4915335.html
+2. https://www.cnblogs.com/qiyuexin/p/6413010.html
+3. https://download.csdn.net/download/xjp8775/9976946(document in Chinese)
+
+
+
+
+
+