Add external links and some news (#514)

* Add external links and some news

* Add interactive parameters link

* fix GPU Windows for Read The Docs

* GPU Targets read the docs fix

README.md

@@ -18,18 +18,22 @@ For more details, please refer to [Features](https://github.com/Microsoft/LightG
 News
 ----
 
+05/03/2017: LightGBM v2 stable release.
+
 04/10/2017 : LightGBM now supports GPU-accelerated tree learning. Please read our [GPU Tutorial](./docs/GPU-Tutorial.md) and [Performance Comparison](./docs/GPU-Performance.md).
 
 02/20/2017 : Update to LightGBM v2.
 
+02/12/2017: LightGBM v1 stable release.
+
 01/08/2017 : Release [**R-package**](./R-package) beta version, welcome to have a try and provide feedback.
 
 12/05/2016 : **Categorical Features as input directly**(without one-hot coding). Experiment on [Expo data](http://stat-computing.org/dataexpo/2009/) shows about 8x speed-up with same accuracy compared with one-hot coding.
 
 12/02/2016 : Release [**python-package**](./python-package) beta version, welcome to have a try and provide feedback.
 
-External(unofficial) Repo
--------------------------
+External (unofficial) Repositories
+----------------------------------
 
 Julia Package: https://github.com/Allardvm/LightGBM.jl
 
@@ -50,6 +54,13 @@ To get started, please follow the [Installation Guide](https://github.com/Micros
 * [**Configuration**](https://github.com/Microsoft/LightGBM/wiki/Configuration)
 * [**Document Indexer**](https://github.com/Microsoft/LightGBM/blob/master/docs/README.md)
 
+External Links
+--------------
+Useful if you are looking for details:
+
+* [**Read The Docs**](http://lightgbm.readthedocs.io/en/latest/) for an all in one documentation from this repository in a browsable fashion
+* [**Laurae++ interactive documentation**](https://sites.google.com/view/lauraepp/parameters) for an interactive and detailed documentation on hyperparameters
+
 How to Contribute
 -----------------
 

docs/GPU-Targets.md

-# Correspondence Table
+GPU Targets Table
+==================================
 
 When using OpenCL SDKs, targeting CPU and GPU at the same time is sometimes possible. This is especially true for Intel OpenCL SDK and AMD APP SDK.
 

docs/GPU-Windows.md

+GPU Windows Compilation
+=========================
+
 This guide is for the MinGW build. 
 
 For the MSVC build with GPU, please refer to https://github.com/Microsoft/LightGBM/wiki/Installation-Guide#windows-2 

docs/Parameters.md

@@ -6,6 +6,9 @@ This is a page contains all parameters in LightGBM.
 * [Python API Reference](./Python-API.md)
 * [Parameters Tuning](./Parameters-tuning.md)
 
+***External Links***
+* [Laurae++ Interactive Documentation](https://sites.google.com/view/lauraepp/parameters)
+
 ***Update of 04/13/2017***
 
 Default values for the following parameters have changed: