update watchman config

Author: bobzhang

docs/.watchmanconfig

@@ -0,0 +1,3 @@
+{
+  "ignore_dirs": [ "_book"]
+}              

docs/Compiler-options.md

@@ -1,5 +1,20 @@
 BuckleScript inherits the command line arguments of the [OCaml compiler](http://caml.inria.fr/pub/docs/manual-ocaml/comp.html). It also adds several flags:
 
+* -bs-main (single directory build)
+
+```bash
+bsc -bs-main main.ml
+```
+
+`bsc` will build module `Main` and all its dependencies, when it
+finishes, it will run `node main.js`.
+
+```bash
+bsc -c -bs-main main.ml
+```
+
+The same as above, but will not run `node`.
+
 * -bs-files
 
 So that you can do

docs/build.json

@@ -0,0 +1,8 @@
+[
+    "trigger", ".", {
+        "name": "build",
+        "expression": ["pcre", "(\\.(ml|md|json|sh)$|bsc$|Makefile)"],
+        "command": ["./build.sh"],
+        "append_files" : true
+    }
+]

docs/build.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+gitbook build >> build.compile
+
+echo "copy files start..." >> build.compile
+cp -r _book/* ../../scriptdoc.git/
+echo "copy files finished" >> build.compile