added Windows instructions

Author: ceremcem

.gitattributes

@@ -12,3 +12,5 @@
 # Denote all files that are truly binary and should not be modified.
 *.png binary
 *.jpg binary
+
+**.reg eol=crlf

doc/on-windows/README.md

@@ -0,0 +1,23 @@
+# Preparing development environment on Windows 
+
+> Tested on Win7
+
+1. Download and install MSYS2.
+
+2. In MSYS2 console: 
+
+        pacman -Syu
+        pacman -S make git python python-pip
+
+3. Use any command in the MSYS2 command prompt.
+
+4. PATCH nodeenv: https://github.com/ekalinin/nodeenv/pull/238
+
+    #  nano `python -c "import nodeenv; print(nodeenv.__file__)"`
+    - is_CYGWIN = platform.system().startswith('CYGWIN')
+    + is_CYGWIN = platform.system().startswith(('CYGWIN', 'MSYS'))
+
+5. Optional: Apply MSYS2 "Open Here" settings (execute `msys2-here.reg`). 
+
+
+

doc/on-windows/git-settings.sh

@@ -0,0 +1 @@
+git config --global core.editor nano

doc/on-windows/msys2-here-uninstall.reg

@@ -0,0 +1,5 @@
+Windows Registry Editor Version 5.00
+
+[-HKEY_CLASSES_ROOT\Directory\Background\shell\open_msys2]
+[-HKEY_CLASSES_ROOT\Folder\shell\open_msys2]
+

doc/on-windows/msys2-here.reg

@@ -0,0 +1,14 @@
+Windows Registry Editor Version 5.00
+
+[HKEY_CLASSES_ROOT\Directory\Background\shell\open_msys2]
+@="Open MSYS2 here"
+
+[HKEY_CLASSES_ROOT\Directory\Background\shell\open_msys2\command]
+@="c:\\msys64\\usr\\bin\\mintty.exe /bin/bash -lc 'cd \"$(cygpath \"%V\")\"; export CHERE_INVOKING=1; exec bash --login -i'"
+
+[HKEY_CLASSES_ROOT\Folder\shell\open_msys2]
+@="Open MSYS2 here"
+
+[HKEY_CLASSES_ROOT\Folder\shell\open_msys2\command]
+@="c:\\msys64\\usr\\bin\\mintty.exe /bin/bash -lc 'cd \"$(cygpath \"%V\")\"; export CHERE_INVOKING=1; exec bash --login -i'"
+

doc/using-virtual-environment.md

@@ -38,46 +38,27 @@
 
 ```bash
 # For Tmux VirtualEnv support
-get_ts_name(){
-    [[ -n $TMUX ]] && tmux list-panes -F '#{session_name}' | tr '-' '_'
-}
-
-get_var(){
-    echo $(eval echo "\$${1}")
-}
-
-tmux_get_myenvvar(){
-    echo $(get_var "ns_$(get_ts_name)_${1}")
-}
-
-tmux_set_envvar(){
-    # tmux_set_envvar your-session-name variable-name value
-    local session_name=$(echo $1 | tr '-' '_')
-    local variable_name=$2
-    local value=$3
-    tmux setenv -g "ns_${session_name}_${variable_name}" "$value"
-}
-
-tmux_set_venv(){
-    tmux_set_envvar $1 "VIRTUAL_ENV" $2
-}
-
-export -f tmux_set_venv
-export -f tmux_set_envvar
-export -f tmux_get_myenvvar
-
-tmux_get_myvenv(){
-    tmux_get_myenvvar "VIRTUAL_ENV"
+tmux_get_var(){
+    local key=$1
+    tmux showenv | awk -F= -v key="$key" '$1==key {print $2}'
 }
 
 # activate the virtual environment if it is declared
-if [ -n "$(tmux_get_myvenv)" ]; then
-    source $(tmux_get_myvenv)/bin/activate;
+venv=$(tmux_get_var "VIRTUAL_ENV")
+if [ -n "$venv" ]; then
+    source $venv/bin/activate;
 fi
 ```
 
-2. Add the following line before launching Tmux:
+2. Send the following line into a Tmux pane:
+
+```bash
+tmux setenv 'VIRTUAL_ENV' /path/to/virtualenv/
+```
+
+With `service-runner` library, `run-in-tmux` function can be used: 
 
 ```bash
-tmux_set_venv your-tmux-session-name /path/to/your/venv
+venv="${SCADAJS_1_ENV:-"$DIR/scada.js/nodeenv"}"
+run-in-tmux "tmux setenv 'VIRTUAL_ENV' $venv && exit"
 ```