Allow install config from any directory

Also small fixes:
- unify all home-dir instances;
- return back to the directory where install.sh was called from;

Author: Alexander Suvorov

install.sh

@@ -1,28 +1,30 @@
+#!/bin/bash
+
 # Author arthurkiller
 # email arthur-lee@qq.com
 # data 2017-1-4
 # this shell is used for initialize the tmux-config
 
-#!/bin/bash
-
 trap exit ERR
-if [ -d $HOME/.tmux  ]
+if [ -d ~/.tmux  ]
 then
     echo .tmux already exist
-    mv $HOME/.tmux $HOME/.tmux.bak
+    mv ~/.tmux ~/.tmux.bak
 fi
 
-if [ -e $HOME/.tmux.conf  ]
+if [ -e ~/.tmux.conf  ]
 then
     echo .tmux.conf already exist
-    mv $HOME/.tmux.conf $HOME/.tmux.conf.bak
+    mv ~/.tmux.conf ~/.tmux.conf.bak
 fi
 
-cp -r $HOME/tmux-config $HOME/.tmux
-ln -s $HOME/.tmux/.tmux.conf $HOME/.tmux.conf
+cp -r . ~/.tmux
+ln -s ~/.tmux/.tmux.conf ~/.tmux.conf
 
-cd ~/.tmux && git submodule init && git submodule update
+pushd ~/.tmux && git submodule init && git submodule update
 
 cd ~/.tmux/vendor/tmux-mem-cpu-load && cmake . && make && sudo make install
 
 tmux source-file ~/.tmux.conf
+
+popd