Merge pull request #9 from shibapm/set_up_ci

Set up ci

.swift-version

@@ -0,0 +1 @@
+4.2

.travis.yml

@@ -0,0 +1,25 @@
+cache:
+  directories:
+    # General SwiftPM
+    - .build
+    # Danger Swift plugins
+    - ~/.danger-swift
+
+language: generic
+
+matrix:
+  include:
+    - os: osx
+      osx_image: xcode10
+      script:
+        - swift build
+
+    - os: linux
+      language: generic
+      sudo: required
+      dist: trusty
+      install:
+        - eval "$(curl -sL https://swiftenv.fuller.li/install.sh)"
+        - swiftenv global 4.2
+      script:
+        - swift build

Sources/PackageConfig/Package.swift

@@ -115,7 +115,7 @@ enum Package {
         }
 
         let range = NSRange(location: 0, length: contents.count)
-        guard let regex = try? NSRegularExpression(pattern: #"^// swift-tools-version:(?:(\d)\.(\d)(?:\.\d)?)$"#),
+        guard let regex = try? NSRegularExpression(pattern: "^// swift-tools-version:(?:(\\d)\\.(\\d)(?:\\.\\d)?)$"),
             let match = regex.firstMatch(in: contents, options: [], range: range),
             let majorRange = Range(match.range(at: 1), in: contents), let major = Int(contents[majorRange]),
             let minorRange = Range(match.range(at: 2), in: contents), let minor = Int(contents[minorRange])