remove torch from requirements.txt (#32)

Author: woailaosang

README.md

@@ -59,11 +59,15 @@ Users can either pick existing models (config files) in *Model Zoo* to start mod
     ```bash
     pip install -r requirements.txt
     ```
-    *NeuronBlocks requires **PyTorch 0.4.1** currently* and automatically gets installed by the above on **Linux**.
-    
-    For **Windows**, we suggest you to install PyTorch via *Conda* by following the instructions of PyTorch [here](https://pytorch.org/get-started/locally/).
-
 
+3. Install PyTorch (*NeuronBlocks supports **PyTorch 0.4.1** and above*).
+    
+    For **Linux**, run the following command:
+    ```bash
+    pip install "torch>=0.4.1"
+    ```
+    
+    For **Windows**, we suggest you to install PyTorch via *Conda* by following the instruction of [PyTorch](https://pytorch.org/get-started/locally/).
 
 
 ## <span id="quick-start">Quick Start</span>

README_zh_CN.md

@@ -51,7 +51,7 @@ NeuronBlocks包括 ***Block Zoo*** 和 ***Model Zoo*** 两个重要组件，其
 # 快速入门
 ## 安装
 
-*注: NeuronBlocks支持 **Python 3.6***
+*注: NeuronBlocks支持 **Python 3.6**及以上*
 
 1. Clone本项目： 
     ```bash
@@ -63,13 +63,13 @@ NeuronBlocks包括 ***Block Zoo*** 和 ***Model Zoo*** 两个重要组件，其
     pip install -r requirements.txt
     ```
 
-3. 安装PyTorch ( *NeuronBlocks支持 **PyTorch 0.4.1** * ).
+3. 安装PyTorch ( *NeuronBlocks支持 **PyTorch 0.4.1** 及以上*):
 
     对于 **Linux** ，运行以下命令：
     ```bash
-    pip install torch==0.4.1
+    pip install "torch>=0.4.1"
     ```
-    对于 **Windows** ，建议按照[PyTorch官方安装教程](https://pytorch.org/get-started/previous-versions/)通过Conda安装PyTorch。
+    对于 **Windows** ，建议按照[PyTorch官方安装教程](https://pytorch.org/get-started/locally/)通过Conda安装PyTorch。
 
 
 ## 快速开始

requirements.txt

@@ -5,4 +5,3 @@ numpy==1.16.3
 scikit-learn==0.20.3
 ftfy==5.5.1
 jieba==0.39
-torch==0.4.1