emacs.d: initial config version

- starting init.el
  just basics (package, use-package, path-handlin)
- include my-site-start.el
  that includes site-start.d directory and imports
  all *.el files in lexical order
- functionality is imported via use-package inside
  the *.el file
  (first run: internet connection is needed to MELPA)

site-start.d/102-hydra.el

@@ -0,0 +1,29 @@
+;;; 102-hydra.el --- tie related commands into a family of short bindings
+
+;;; Commentary:
+;; Hydra enables you to tie related commands into a family of short bindings
+;; with a common prefix - a Hydra.
+;; reference: https://github.com/abo-abo/hydra
+
+;;; Code:
+(use-package hydra
+  :config
+  (setq hydra-lv nil))
+
+;; Zooming
+(defhydra hydra-zoom ()
+  "zoom"
+  ("+" text-scale-increase "in")
+  ("=" text-scale-increase "in")
+  ("-" text-scale-decrease "out")
+  ("_" text-scale-decrease "out")
+  ("0" (text-scale-adjust 0) "reset")
+  ("q" nil "quit" :color blue))
+
+(bind-keys ("C-x C-0" . hydra-zoom/body)
+	   ("C-x C-=" . hydra-zoom/body)
+	   ("C-x C--" . hydra-zoom/body)
+	   ("C-x C-+" . hydra-zoom/body))
+
+(provide '102-hydra)
+;;; 102-hydra.el ends here