Updated and reformatted documentation as markdown
start work on ding2.x-branch
initial changes in line with Coder suggestions. Hook_nodeapi code split up into the new 7 functions, database functions changed, and tab changed to spaces.
added configure line to .info file
upgrade of database query code in admin settings form
now queries against "ding_library" instead of "library" to retrieve list of all library names
removed old 1.x-version update code  from install file
set to use hook_fom_FORM_ID_alter instead of hook_form_alter
corrected wrong FORM_ID in hook_form_FORM_ID_alter function, and fixed notices due to undefined indexes and constants
removed weights on the added form elements - final position is decided later
Corrected entry_price_extra_info (due to changes in Form API) to make it show again
fixed how settings arre fetched from database due to D7 Database API changes
Changed #value to #markup for Place2Book ID-element on the form (due to changes in Form API) to make it show again
place2book checkbox default values are now explicitly cast as boolean (in D7 string such as "maintain_copy" did not interpret as true and did not generate a "checked" state)
Implemented entry price in place2book - the event node type in ding2 does not include this field anymore
changed code to reflect that node type 'event' in ding2 is named 'ding_event'
db functions updated to the new D7 database op syntax
corrected instances of variable_get syntax
Update ding_place2book-notes.txt
getting the library id and thus the API key correctly in place2book_event_op function