change default key bindings

Emacs reserves C-c [a-zA-Z] for user-defined key bindings. Thus, C-c
j, C-c b, and C-c f have been changed into C-c C-j, C-c C-b, and C-c C-f.
fixed view-mode not using org-journal-mode
Added melpa and melpa stable badges
A prefix for the org-journal-new-entry would avoid entry creation
Merge pull request #23 from vkazanov/master

A prefix for the org-journal-new-entry would avoid entry creation
updated version number and added change log
Calendar improvement: C-j now just opens an entry in another window without selecting it
added documentation for the new functionality
Merge branch 'vkazanov-master'
changed changelog from list to definition list
amended github link.
added autoload cookie for org-journal-mode

Thus, journal files should be restored in org-journal mode by desktop-save-mode.
fix "require" command
Merge pull request #25 from charlescharles/fix-require

fix "require" command