Fixed Windows installation instructions (#914)

README.md

@@ -115,19 +115,23 @@ Go to [this](http://www.lfd.uci.edu/~gohlke/pythonlibs/#pyyaml) page and downloa
 (If running 64-bit python or if you get a 'not a supported wheel on this platform' error,
 download the 64 bit version instead: PyYAML-3.11-cp27-cp27m-win_amd64.whl )
 
+*(Run the following commands from Git Bash.)*
+
 ```
+// switch to the directory where you downloaded PyYAML
 $ cd download-directory
-$ pip install PyYAML-3.11-cp27-cp27m-win32.whl
-// if you needed to download the 64-bit version)
-// (replace PyYAML-3.11-cp27-cp27m-win32.whl with PyYAML-3.11-cp27-cp27m-win_amd64.whl
+// install 32-bit version
+$ pip2 install PyYAML-3.11-cp27-cp27m-win32.whl
+// if you need to install the 64-bit version, do this instead:
+// pip2 install PyYAML-3.11-cp27-cp27m-win_amd64.whl
 ```
 
 After this, just do:
 
 ```
 $ git clone -b master https://github.com/PokemonGoF/PokemonGo-Bot  
 $ cd PokemonGo-Bot  
-$ pip install -r requirements.txt
+$ pip2 install -r requirements.txt
 $ git submodule init
 $ git submodule update
 ```
@@ -137,8 +141,9 @@ $ git submodule update
 ```
 $ git clone -b dev https://github.com/PokemonGoF/PokemonGo-Bot  
 $ cd PokemonGo-Bot  
-$ virtualenv .  
-$ source bin/activate  
+// create virtualenv using Python 2.7 executable
+$ virtualenv -p C:\python27\python.exe venv
+$ source venv/Scripts/activate  
 $ pip install -r requirements.txt  
 $ git submodule init
 $ git submodule update