Move libsteam_api.dylib into steam_api.bundle so that Unity can find it

Plugins/steam_api.bundle/Contents/Info.plist

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>BuildMachineOSBuild</key>
+	<string>11G63</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>libsteam_api.dylib</string>
+	<key>CFBundleIdentifier</key>
+	<string>com.rileylabrecque.CSteamworks</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundlePackageType</key>
+	<string>BNDL</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1.31</string>
+	<key>CSResourcesFileMapped</key>
+	<string>yes</string>
+	<key>DTCompiler</key>
+	<string></string>
+	<key>DTPlatformBuild</key>
+	<string>4H1503</string>
+	<key>DTPlatformVersion</key>
+	<string>GM</string>
+	<key>DTSDKBuild</key>
+	<string>11E52</string>
+	<key>DTSDKName</key>
+	<string>macosx10.7</string>
+	<key>DTXcode</key>
+	<string>0463</string>
+	<key>DTXcodeBuild</key>
+	<string>4H1503</string>
+</dict>
+</plist>