Add with live grep option to insert link function and find notes function (closes #188)

* add with_live_grep option to InsertLink function
* add with_live_grep option to FindNotes function
* update documents

doc/telekasten.txt

@@ -537,9 +537,16 @@ telekasten.new_templated_note()~
   See also:~
       - |telekasten.template_files|
                                                     *telekasten.find_notes()*
-telekasten.find_notes()~
+telekasten.find_notes({opts})~
   Opens a Telescope file finder and lets you pick a note by title (file name).
 
+  Valid keys for {opts}
+
+  with_live_grep:~
+    If `true`, it will use live_grep picker and you can search file by file contents.
+
+    Default: `nil`
+
                                               *telekasten.find_daily_notes()*
 telekasten.find_daily_notes()~
   Find daily notes by date, via Telescope. File names are sorted by file name,
@@ -631,6 +638,11 @@ telekasten.insert_link({opts})~
     when being used in a simple `inoremap` key mapping like shown in
     |telekasten.mappings|.
 
+    Default: `nil`
+
+  with_live_grep:~
+    If `true`, it will use live_grep picker and you can search file by file contents.
+
     Default: `nil`
 
                                                    *telekasten.follow_link()*