Force nonhierachical property: documentation

Documented new column option `ResolveHierarchicalPropertyName` in README.md.

Issue #542

Author: ckadluba

README.md

@@ -339,6 +339,7 @@ Each Standard Column in the `ColumnOptions.Store` list and any custom columns yo
 
 * `ColumnName`
 * `PropertyName`
+* `ResolveHierarchicalPropertyName`
 * `DataType`
 * `AllowNull`
 * `DataLength`
@@ -352,7 +353,11 @@ Any valid SQL column name can be used. Standard Columns have default names assig
 
 The optional name of a Serilog property to use as the value for a custom column. If not provided, the property used is the one that has the same name as the specified ColumnName. It applies only to custom columns defined in `AdditionalColumns` and is ignored for standard columns.
 
-PropertyName can contain a simple property name like `SomeProperty` but it can also be used to hierachically reference sub-properties with expressions like `SomeProperty.SomeSubProperty.SomeThirdLevelProperty`. This can be used to easily bind additional columns to specific sub-properties following the paradigm of structured logging. Please be aware that collections are not supported. This means expressions like `SomeProperty.SomeArray[2]` will not work.
+PropertyName can contain a simple property name like `SomeProperty` but it can also be used to hierarchically reference sub-properties with expressions like `SomeProperty.SomeSubProperty.SomeThirdLevelProperty`. This can be used to easily bind additional columns to specific sub-properties following the paradigm of structured logging. Please be aware that collections are not supported. This means expressions like `SomeProperty.SomeArray[2]` will not work. Hierarchical property resolution can be disabled using `ResolveHierarchicalPropertyName` in case you need property names containing dots which should not be treated as hierarchical.
+
+### ResolveHierarchicalPropertyName
+
+Controls whether hierarchical sub-property expressions in `PropertyName` are evaluated (see above). The default is `true`. If set to `false` any value is treated as a simple property name and no hierarchical sub-property binding is done.
 
 ### DataType
 
@@ -385,7 +390,7 @@ Numeric types use the default precision and scale. For numeric types, you are re
 
 ### AllowNull
 
-Determines whether or not the column can store SQL `NULL` values. The default is true. Some of the other features like `PrimaryKey` have related restrictions, and some of the Standard Columns impose restrictions (for example, the `Id` column never allows nulls).
+Determines whether the column can store SQL `NULL` values. The default is `true`. Some of the other features like `PrimaryKey` have related restrictions, and some of the Standard Columns impose restrictions (for example, the `Id` column never allows nulls).
 
 ### DataLength