Update README

README.md

@@ -6,9 +6,13 @@ Open Chinese Convert (OpenCC, 開放中文轉換) is an opensource project for c
 
 中文簡繁轉換開源項目，支持詞彙級别的轉換、異體字轉換和地區習慣用詞轉換（中國大陸、臺灣、香港）。
 
+## Documentations
+
 Project home page https://code.google.com/p/opencc/
 
-詳細介紹 https://code.google.com/p/opencc/wiki/Introduction
+Introduction (詳細介紹) https://code.google.com/p/opencc/wiki/Introduction
+
+Development Documentation http://byvoid.github.io/OpenCC/
 
 ## Projects using Opencc
 
@@ -40,14 +44,36 @@ Project home page https://code.google.com/p/opencc/
 
     npm install opencc
 
+## Usage
+
+    $ opencc --help
+
+    Open Chinese Convert (OpenCC) Command Line Tool
+
+    Author: BYVoid <[email protected]>
+    Bug Report: http://github.com/BYVoid/OpenCC/issues
+
+    Usage:
+     opencc [Options]
+
+    Options:
+     -i [file], --input=[file]   Read original text from [file].
+     -o [file], --output=[file]  Write converted text to [file].
+     -c [file], --config=[file]  Load configuration of conversion from [file].
+     -v, --version               Print version and build information.
+     -h, --help                  Print this help.
+
+    With no input file, reads standard input and writes converted stream to standard output.
+    Default configuration(zhs2zht.ini) will be loaded if not set.
+
 ## Build
 
 ### Build with CMake
 
 Make a directory and check in:
 
-		mkdir build
-		cd build
+    mkdir build
+    cd build
 
 Build sources:
 
@@ -56,17 +82,17 @@ Build sources:
 
 On windows, run these commands instead:
 
-		cmake .. -G "MSYS Makefiles" -DCMAKE_INSTALL_PREFIX="" -DCMAKE_BUILD_TYPE=Release -DENABLE_GETTEXT:BOOL=OFF
-		make
+    cmake .. -G "MSYS Makefiles" -DCMAKE_INSTALL_PREFIX="" -DCMAKE_BUILD_TYPE=Release -DENABLE_GETTEXT:BOOL=OFF
+    make
 
 Install:
 
-		sudo make install
+    sudo make install
 
 
 ### Build with gyp
 
-		mkdir build
+    mkdir build
     gyp --depth . -D library=shared_library -f make --generator-output=build opencc.gyp
     make -C build