Added some extra PHPCS rules

phpcs.xml

@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<ruleset name="pcsg-generated-ruleset">
+<ruleset
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:noNamespaceSchemaLocation="./vendor/squizlabs/php_codesniffer/phpcs.xsd"
+    name="pcsg-generated-ruleset">
     <description>
         Created with the PHP Coding Standard Generator.
         http://edorian.github.io/php-coding-standard-generator/
@@ -7,6 +10,26 @@
     <arg name="colors" />
     <arg name="tab-width" value="4" />
     <rule ref="PSR12" />
+    <rule ref="PSR1">
+        <exclude name="PSR1.Classes.ClassDeclaration.MissingNamespace" />
+    </rule>
+    <rule ref="Generic">
+        <exclude name="Generic.Files.LineEndings.InvalidEOLChar" />
+        <exclude name="Generic.PHP.ClosingPHPTag.NotFound" />
+        <exclude name="Generic.PHP.UpperCaseConstant.Found" />
+        <exclude name="Generic.Arrays.DisallowShortArraySyntax.Found" />
+        <exclude name="Generic.Files.EndFileNoNewline.Found" />
+        <exclude name="Generic.Commenting.DocComment.TagValueIndent" />
+        <exclude name="Generic.Classes.OpeningBraceSameLine.BraceOnNewLine" />
+        <exclude name="Generic.WhiteSpace.DisallowSpaceIndent.SpacesUsed" />
+        <exclude name="Generic.Files.LowercasedFilename.NotFound" />
+        <exclude name="Generic.Functions.OpeningFunctionBraceKernighanRitchie.BraceOnNewLine" />
+        <exclude name="Generic.Formatting.MultipleStatementAlignment.NotSameWarning" />
+        <exclude name="Generic.Formatting.SpaceAfterNot.Incorrect" />
+        <exclude name="Generic.Commenting.DocComment.SpacingBeforeShort" />
+        <exclude name="Generic.Commenting.DocComment.ContentAfterOpen" />
+        <exclude name="Generic.Functions.OpeningFunctionBraceBsdAllman.BraceOnSameLine" />
+    </rule>
     <file>flight/</file>
     <file>tests/</file>
 </ruleset>