Update Greek language and Readme file

The Greek language updated by Yannis Spyrou, sent via email

README.md

@@ -160,6 +160,8 @@ The built-in editor found in the admin panel. HTMLy also allows you to write the
 
 For static pages you can upload it to the `content/static` folder.
 
+**Note for offline writing:** Every time new content added (post, category etc.), or you make changes that change the folder structure or file names, simply delete the `index` folder inside `cache` folder so that the changes detected by HTMLy.
+
 Category
 --------
 The default category is `Uncategorized` with slug `uncategorized` and you do not need to creating it inside `content/data/category/` folder. But if you write it offline and want to assign new category to specific post you need to creating it first before you can use those category, example `content/data/category/new-category.md` with the following content:

lang/el_GR.ini

@@ -272,22 +272,22 @@ No_search_results="Δεν υπάρχουν αποτελέσματα αναζήτ
 ;TagCloud
 Tagcloud_widget_at_most = "TagCloud το πολύ"
 ;Scheduled
-Scheduled = "Scheduled"
-Scheduled_posts = "Scheduled posts"
-Scheduled_tips = "Publishing a post with future date or time, it will go into scheduled posts"
-No_scheduled_posts_found = "No scheduled posts found!"
+Scheduled = "Προγραμματισμένες"
+Scheduled_posts = "Προγραμματισμένες αναρτήσεις"
+Scheduled_tips = "Δημοσιεύοντας μια ανάρτηση με μελλοντική ημερομηνία ή ώρα, θα μεταφερθεί στις προγραμματισμένες αναρτήσεις"
+No_scheduled_posts_found = "Δεν υπάρχουν προγραμματισμένες αναρτήσεις!"
 ;Profile
-Profile_for = "Profile for"
+Profile_for = "Προφίλ για"
 ;Tag
-Posts_tagged = "Posts tagged"
-All_posts_tagged = "All posts tagged"
+Posts_tagged = "Δημοσιεύσεις με ετικέτα"
+All_posts_tagged = "Όλες οι αναρτήσεις με ετικέτα"
 ;Archive
-Archive_for = "Archive for"
-Archive_page_for = "Archive page for"
+Archive_for = "Αρχείο για"
+Archive_page_for = "Αρχειοθέτηση σελίδας για"
 ;Type
-Posts_with_type = "Posts with type"
+Posts_with_type = "Δημοσιεύσεις με τύπο"
 ;Search
-Search_results_for = "Search results for"
+Search_results_for = "Αποτελέσματα αναζήτησης για"
 ;Feed
-Cannot_read_feed_content = "Cannot read feed content"
-Unknown_feed_format = "Unknown feed format"
+Cannot_read_feed_content = "Δεν είναι δυνατή η ανάγνωση της ροής"
+Unknown_feed_format = "Άγνωστη μορφή ροής"