Added version updating script

Adapted a version updating script from the mapbox-directions-swift repository, for use when releasing a new version.

Author: 1ec5

scripts/update-version.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+
+set -e
+set -o pipefail
+set -u
+
+function step { >&2 echo -e "\033[1m\033[36m* $@\033[0m"; }
+function finish { >&2 echo -en "\033[0m"; }
+trap finish EXIT
+
+if [ $# -eq 0 ]; then
+    echo "Usage: v<semantic version>"
+    exit 1
+fi
+
+SEM_VERSION=$1
+SEM_VERSION=${SEM_VERSION/#v}
+SHORT_VERSION=${SEM_VERSION%-*}
+MINOR_VERSION=${SEM_VERSION%.*}
+YEAR=$(date '+%Y')
+
+step "Version ${SEM_VERSION}"
+
+step "Updating Xcode targets to version ${SHORT_VERSION}…"
+
+xcrun agvtool bump -all
+xcrun agvtool new-marketing-version "${SHORT_VERSION}"
+
+step "Updating CocoaPods podspecs to version ${SEM_VERSION}…"
+
+find . -type f -name '*.podspec' -exec sed -i '' "s/^ *s.version *=.*$/  s.version = \"${SEM_VERSION}\"/" {} +
+
+# Skip updating the installation instructions for patch releases or prereleases.
+if [[ $SHORT_VERSION == $SEM_VERSION && $SHORT_VERSION == *.0 ]]; then
+    step "Updating readmes to version ${SEM_VERSION}…"
+    sed -i '' -E "s/~> *[^']+/~> ${MINOR_VERSION}/g; s/.git\", from: \"*[^\"]+/.git\", from: \"${SEM_VERSION}/g" README.md
+elif [[ $SHORT_VERSION != $SEM_VERSION ]]; then
+    step "Updating readmes to version ${SEM_VERSION}…"
+    sed -i '' -E "s/:tag => 'v[^']+'/:tag => 'v${SEM_VERSION}'/g; s/\"mapbox\/turf-swift\" \"v[^\"]+\"/\"mapbox\/turf-swift\" \"v${SEM_VERSION}\"/g; s/\.exact\(\"*[^\"]+/.exact(\"${SEM_VERSION}/g" README.md
+fi
+
+step "Updating copyright year to ${YEAR}…"
+
+sed -i '' -E "s/© ([0-9]{4})[–-][0-9]{4}/© \\1–${YEAR}/g" LICENSE.md