Update README.md
commit after error
Merge branch 'computed_fields' of https://github.com/Ekhvalov/recordsman

Conflicts:
	src/RecordsMan/TExternalFields.php
	tests/test_items_setup.php
Merge branch 'computed_fields' of https://github.com/Ekhvalov/recordsman

Conflicts:
	src/RecordsMan/TExternalFields.php
	tests/test_items_setup.php
Merge branch 'computed_fields' of https://github.com/Ekhvalov/recordsman

Conflicts:
	src/RecordsMan/TExternalFields.php
	tests/test_items_setup.php
Merge branch 'computed_fields' of https://github.com/Ekhvalov/recordsman

Conflicts:
	src/RecordsMan/TExternalFields.php
	tests/test_items_setup.php
Merge branch 'computed_fields' of https://github.com/Ekhvalov/recordsman

Conflicts:
	src/RecordsMan/TExternalFields.php
	tests/test_items_setup.php
Second external table added and tested.
Save external fields occurs by $record->save(),
Drop external fields added.
Self initialization added.
Annotation added.
User Ekhvalov's version of files
Merge branch 'Ekhvalov-master'