fix(webinstall): Fix variable names

Author: jcs090218

webinstall/install.bat

@@ -36,6 +36,6 @@ del %ZIP%
 
 echo ✓ Eask is installed in %EAKS_BIN_DIR%.
 echo.
-echo Don't forget to add `%EASK_BIN_DIR% to PATH environment variable:
+echo Don't forget to add %EASK_BIN_DIR% to PATH environment variable:
 echo.
-echo     set PATH=%ELDEV_BIN_DIR%;%%PATH%%
+echo     set PATH=%EASK_BIN_DIR%;%%PATH%%

webinstall/install.sh

@@ -53,7 +53,7 @@ unzip -d "$eask_bin_dir" -o "$zip"
 
 rm $zip
 
-echo "✓ Eask is installed in %EAKS_BIN_DIR%."
+echo "✓ Eask is installed in ${eask_bin_dir}."
 echo
 echo "Don't forget to add ${eask_bin_dir} to PATH environment variable:"
 echo