Run clang-format

Add the ROS style clang-format file and run clang-format-6.0.0

Closes #33

.clang-format

@@ -0,0 +1,94 @@
+---
+# Copyright (c) 2015, Dave Coleman
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+#   list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright notice,
+#   this list of conditions and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+#
+# * Neither the name of roscpp_code_format nor the names of its
+#   contributors may be used to endorse or promote products derived from
+#   this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+BasedOnStyle:  Google
+AccessModifierOffset: -2
+ConstructorInitializerIndentWidth: 2
+AlignEscapedNewlinesLeft: false
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: None
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakTemplateDeclarations: true
+AlwaysBreakBeforeMultilineStrings: false
+BreakBeforeBinaryOperators: false
+BreakBeforeTernaryOperators: false
+BreakConstructorInitializersBeforeComma: true
+BinPackParameters: true
+ColumnLimit:    120
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+DerivePointerBinding: false
+PointerBindsToType: true
+ExperimentalAutoDetectBinPacking: false
+IndentCaseLabels: true
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCSpaceBeforeProtocolList: true
+PenaltyBreakBeforeFirstCallParameter: 19
+PenaltyBreakComment: 60
+PenaltyBreakString: 1
+PenaltyBreakFirstLessLess: 1000
+PenaltyExcessCharacter: 1000
+PenaltyReturnTypeOnItsOwnLine: 90
+SpacesBeforeTrailingComments: 2
+Cpp11BracedListStyle: false
+Standard:        Auto
+IndentWidth:     2
+TabWidth:        2
+UseTab:          Never
+IndentFunctionDeclarationAfterType: false
+SpacesInParentheses: false
+SpacesInAngles:  false
+SpaceInEmptyParentheses: false
+SpacesInCStyleCastParentheses: false
+SpaceAfterControlStatementKeyword: true
+SpaceBeforeAssignmentOperators: true
+ContinuationIndentWidth: 4
+SortIncludes: false
+SpaceAfterCStyleCast: false
+
+# Configure each individual brace in BraceWrapping
+BreakBeforeBraces: Custom
+
+# Control of individual brace wrapping cases
+BraceWrapping: {
+    AfterClass: 'true'
+    AfterControlStatement: 'true'
+    AfterEnum : 'true'
+    AfterFunction : 'true'
+    AfterNamespace : 'true'
+    AfterStruct : 'true'
+    AfterUnion : 'true'
+    BeforeCatch : 'true'
+    BeforeElse : 'true'
+    IndentBraces : 'false'
+}
+...