Create README.md

README.md

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+PN2的解析实现
+
+target/in progress：python
+
+target.todo：rust, elixir, F#, typescript/haxe, java/scala/kotlin
+
+PN2语法借鉴：APL/K/Q、Forth、erlang
+
+
+for example/1：
+>code main.c`rs
+```
+rs)
+main ->
+ `print "hello"
+```
+>elixir c8/comp.exs main.c`rs
+```rust
+fn main(){
+  print!("hello");
+}
+```
+
+例2：
+>code 测试1.c8
+```
+c8>
+main ->
+ 输出 hello
+
+> f=c8/main, o=main.*
+> biu = f->o
+
+py)+
+print 'done'
+
+> biu: rs ex py
+```
+>elixir c8/comp.exs 测试1.c8 ; main.py
+```
+def main():
+  print('hello')
+
+def add():
+  print('done')
+if __name__ == '__main__':
+  main(); add()
+```
+main.ex, main.rs与之类似
+
+
+roadmap
+-------
+
+ - py web框架/django/pyramid; 必要+充分
+ - py爬虫
+ - elixir
+ - rust
+ - ...
+ - PN2.todo: prolog的回溯和unification