Add bootstrap-Windows.cmd

usage: bootstrap-Windows.cmd [/?]

Bootstrap a macOS instance with:

* Windows SDK - from MSDN
* Chocolatey - package manager
* Cmder, including Git - from Chocolatey
* Python - from Chocolatey
* virtualenv - from pip
* SSH key - from ssh-keygen
* GitHub public key - with SSH key
* GitLab public key - with SSH key
* BitBucket Cloud public key - with SSH key
* Gogs Cloud public key - with SSH key
* conduit - configuration manager

optional arguments:
        /?              show this help message and exit

bootstrap-Windows.cmd

@@ -38,7 +38,7 @@ if errorlevel 1 (
 :: Install Windows SDK
 :windows_sdk
 set choice=
-set /p choice="Install Windows SDK (Y/n)?"
+set /p choice="Install Windows SDK [Y/n]?"
 if "%choice%"=="" goto windows_sdk_yes
 if "%choice%"=="Y" goto windows_sdk_yes
 if "%choice%"=="y" goto windows_sdk_yes
@@ -58,7 +58,7 @@ del %~dp0\winsdksetup.exe
 :: Install Chocolatey
 :choco
 set choice=
-set /p choice="Install Chocolatey (Y/n)? "
+set /p choice="Install Chocolatey [Y/n]? "
 if "%choice%"=="" goto choco_yes
 if "%choice%"=="Y" goto choco_yes
 if "%choice%"=="y" goto choco_yes
@@ -74,7 +74,7 @@ if errorlevel 1 exit /B 1
 :: Install Cmder, including Git
 :git
 set choice=
-set /p choice="Install Cmder, including Git (Y/n)? "
+set /p choice="Install Cmder, including Git [Y/n]? "
 if "%choice%"=="" goto git_yes
 if "%choice%"=="Y" goto git_yes
 if "%choice%"=="y" goto git_yes
@@ -90,7 +90,7 @@ if errorlevel 1 exit /B 1
 :: Install Python
 :python
 set choice=
-set /p choice="Install Python (Y/n)? "
+set /p choice="Install Python [Y/n]? "
 if "%choice%"=="" goto python_yes
 if "%choice%"=="Y" goto python_yes
 if "%choice%"=="y" goto python_yes
@@ -106,7 +106,7 @@ if errorlevel 1 exit /B 1
 :: Install virtualenv
 :virtualenv
 set choice=
-set /p choice="Install virtualenv (Y/n)? "
+set /p choice="Install virtualenv [Y/n]? "
 if "%choice%"=="" goto virtualenv_yes
 if "%choice%"=="Y" goto virtualenv_yes
 if "%choice%"=="y" goto virtualenv_yes
@@ -122,7 +122,7 @@ if errorlevel 1 exit /B 1
 :: Generate SSH key
 :ssh_key
 set choice=
-set /p choice="Generate SSH key (Y/n)? "
+set /p choice="Generate SSH key [Y/n]? "
 if "%choice%"=="" goto ssh_key_yes
 if "%choice%"=="Y" goto ssh_key_yes
 if "%choice%"=="y" goto ssh_key_yes
@@ -142,7 +142,7 @@ if errorlevel 1 exit /B 1
 :: Add git to the PATH to pip can find it
 set PATH=C:\tools\cmder\vendor\git-for-windows\bin;%PATH%
 set choice=
-set /p choice="Set SSH keys on remote Git servers (Y/n)? "
+set /p choice="Set SSH keys on remote Git servers [Y/n]? "
 if "%choice%"=="" goto remote_ssh_keys_yes
 if "%choice%"=="Y" goto remote_ssh_keys_yes
 if "%choice%"=="y" goto remote_ssh_keys_yes
@@ -161,7 +161,7 @@ if errorlevel 1 exit /B 1
 
 :remove_bootstrap
 set choice=
-set /p choice="Remove bootstrap-Windows.cmd (y/N)? "
+set /p choice="Remove bootstrap-Windows.cmd [y/N]? "
 if "%choice%"=="" goto remove_bootstrap_no
 if "%choice%"=="Y" goto remove_bootstrap_yes
 if "%choice%"=="y" goto remove_bootstrap_yes