Add missing sniffs to list

README.md

@@ -50,6 +50,7 @@ Slevomat Coding Standard for [PHP_CodeSniffer](https://github.com/squizlabs/PHP_
  - [SlevomatCodingStandard.Classes.DisallowMultiConstantDefinition](doc/classes.md#slevomatcodingstandardclassesdisallowmulticonstantdefinition-) 🔧
  - [SlevomatCodingStandard.Classes.DisallowMultiPropertyDefinition](doc/classes.md#slevomatcodingstandardclassesdisallowmultipropertydefinition-) 🔧
  - [SlevomatCodingStandard.Classes.EmptyLinesAroundClassBraces](doc/classes.md#slevomatcodingstandardclassesemptylinesaroundclassbraces-) 🔧
+ - [SlevomatCodingStandard.Classes.EnumCaseSpacing](doc/classes.md#slevomatcodingstandardclassesenumcasespacing-) 🔧
  - [SlevomatCodingStandard.Classes.ForbiddenPublicProperty](doc/classes.md#slevomatcodingstandardclassesforbiddenpublicproperty)
  - [SlevomatCodingStandard.Classes.MethodSpacing](doc/classes.md#slevomatcodingstandardclassesmethodspacing-) 🔧
  - [SlevomatCodingStandard.Classes.ModernClassNameReference](doc/classes.md#slevomatcodingstandardclassesmodernclassnamereference-) 🔧
@@ -59,6 +60,7 @@ Slevomat Coding Standard for [PHP_CodeSniffer](https://github.com/squizlabs/PHP_
  - [SlevomatCodingStandard.Classes.RequireAbstractOrFinal](doc/classes.md#slevomatcodingstandardclassesrequireabstractorfinal-) 🔧
  - [SlevomatCodingStandard.Classes.RequireConstructorPropertyPromotion](doc/classes.md#slevomatcodingstandardclassesrequireconstructorpropertypromotion-) 🔧
  - [SlevomatCodingStandard.Classes.RequireMultiLineMethodSignature](doc/classes.md#slevomatcodingstandardclassesrequiremultilinemethodsignature-) 🔧
+ - [SlevomatCodingStandard.Classes.RequireSelfReference](doc/classes.md#slevomatcodingstandardclassesrequireselfreference-) 🔧
  - [SlevomatCodingStandard.Classes.RequireSingleLineMethodSignature](doc/classes.md#slevomatcodingstandardclassesrequiresinglelinemethodsignature-) 🔧
  - [SlevomatCodingStandard.Classes.SuperfluousAbstractClassNaming](doc/classes.md#slevomatcodingstandardclassessuperfluousabstractclassnaming)
  - [SlevomatCodingStandard.Classes.SuperfluousErrorNaming](doc/classes.md#slevomatcodingstandardclassessuperfluouserrornaming)
@@ -180,6 +182,7 @@ Slevomat Coding Standard for [PHP_CodeSniffer](https://github.com/squizlabs/PHP_
  - [SlevomatCodingStandard.TypeHints.ReturnTypeHintSpacing](doc/type-hints.md#slevomatcodingstandardtypehintsreturntypehintspacing-) 🔧
  - [SlevomatCodingStandard.TypeHints.UnionTypeHintFormat](doc/type-hints.md#slevomatcodingstandardtypehintsuniontypehintformat-) 🔧
  - [SlevomatCodingStandard.TypeHints.UselessConstantTypeHint](doc/type-hints.md#slevomatcodingstandardtypehintsuselessconstanttypehint-) 🔧
+ - [SlevomatCodingStandard.Variables.DisallowVariableVariable](doc/variables.md#slevomatcodingstandardvariablesdisallowvariablevariable)
  - [SlevomatCodingStandard.Variables.DisallowSuperGlobalVariable](doc/variables.md#slevomatcodingstandardvariablesdisallowsuperglobalvariable)
  - [SlevomatCodingStandard.Variables.DuplicateAssignmentToVariable](doc/variables.md#slevomatcodingstandardvariablesduplicateassignmenttovariable)
  - [SlevomatCodingStandard.Variables.UnusedVariable](doc/variables.md#slevomatcodingstandardvariablesunusedvariable)