modified installer

setup.bat

@@ -1,5 +1,7 @@
 @echo off
 
+cd %~dp0
+
 echo Installing bakasable
 
 md "C:\Program Files\bakasable"
@@ -10,3 +12,5 @@ xcopy /y .\bin\windows\bakasable.exe "C:\Program Files\bakasable"
 xcopy /y .\bin\windows\premake5.exe "C:\Program Files\bakasable"
 
 powershell .\path.ps1
+
+pause

setup.sh

@@ -1,8 +1,11 @@
 echo Installing bakasable
 
+cd $(dirname "$0")
+
 handle_error() {
     echo "An error occurred on line $1"
     rm -rf ~/.bakasable
+    cd $(pwd)
     exit 1
 }
 trap 'handle_error $LINENO' ERR
@@ -10,6 +13,17 @@ trap 'handle_error $LINENO' ERR
 mkdir -m 777 ~/.bakasable
 mkdir ~/.bakasable/cache
 
-cp ./bin/linux/bakasable ~/.bakasable/
+cp -f ./bin/linux/bakasable ~/.bakasable/
+if [ ! $(witch premake5) ]; then
+    cp -f ./bin/linux/premake5 ~/.bakasable/
+fi
 
+echo Searching path in env PATH 
+if [ ! $(witch bakasable) ]; then
+    echo Path not found in env PATH
+	echo Adding path
     echo "export PATH=$PATH:~/.bakasable" >> ~/.bashrc
+else
+    echo Path already added
+fi
+cd $(pwd)