Update README.md #997
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Update README.md #997
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It is very hard to understand why angular-ui-tree does not work correctly in case you forgot to remove `track by` from `ng-repeat` statement. You drag an item to one place, it is inserted into another. Sometimes error about key duplication falls into the console. So, to make it easier for developers to check if they did everything right, I propose to add the point about removing of `track by` into developing notes.
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It is very hard to understand why angular-ui-tree does not work correctly in case you forgot to remove
track byfromng-repeatstatement. You drag an item to one place, it is inserted into another. Sometimes error about key duplication falls into the console.So, to make it easier for developers to check if they did everything right, I propose to add the point about removing of
track byinto developing notes.