[ios] Add script to automate s3 build and publish process

A large part of the iOS SDK deploy process is creating the various
binary flavors, uploading them to s3, and then testing that those
uploads worked by downloading them from s3 before uploading and
attaching them to the github release.

This script automates that build, upload, download, upload and
attach process and can be run after `mbx auth`.

platform/ios/scripts/deploy-packages.sh

@@ -0,0 +1,84 @@
+#!/usr/bin/env bash
+
+set -e
+set -o pipefail
+set -u
+
+usage() {
+cat <<EOF
+# Usage: sh $0 version target_directory [argument]
+
+# version: The semver version plus optional alpha beta distinction (i.e. {major.minor.patch}{-alpha.N})
+# target_directory: The directory where build output should be placed
+
+# argument:
+#     -g: Upload to github
+
+# environment variables and dependencies: 
+#     - You must run "mbx auth ..." before running
+#     - Set GITHUB_TOKEN to a GitHub API access token in your environment to use GITHUB_RELEASE
+#     - "wget" is required for downloading the zip files from s3
+#     - The "github-release" gem is required to use GITHUB_RELEASE
+EOF
+}
+
+buildPackageStyle() {
+    local package=$1 style=""     
+    if [[ ${#} -eq 2 ]]; then
+        style="$2"
+    fi            
+    echo "make ${package} ${style}"
+    make ${package}
+    echo "publish ${package} with ${style}"
+    local file_name=""
+    if [ -z ${style} ] 
+    then
+        ./platform/ios/scripts/publish.sh "${PUBLISH_VERSION}"
+        file_name=mapbox-ios-sdk-${PUBLISH_VERSION}.zip        
+    else
+        ./platform/ios/scripts/publish.sh "${PUBLISH_VERSION}" ${style}
+        file_name=mapbox-ios-sdk-${PUBLISH_VERSION}-${style}.zip        
+    fi
+    echo "Downloading ${file_name} from s3... to ${BINARY_DIRECTORY}"
+    wget -P ${BINARY_DIRECTORY} http://mapbox.s3.amazonaws.com/mapbox-gl-native/ios/builds/${file_name}
+    if [[ "${GITHUB_RELEASE}" == true ]]; then
+        echo "publish ${file_name} to GitHub"
+        github-release --verbose upload --tag "ios-v${PUBLISH_VERSION}" --name ${file_name} --file "${BINARY_DIRECTORY}/${file_name}"
+    fi        
+}
+
+if [ ${#} -eq 0 -o ${#} -gt 3 ]; then
+    usage
+    exit 1
+fi
+
+export TRAVIS_REPO_SLUG=mapbox-gl-native
+export PUBLISH_VERSION=$1
+export GITHUB_USER=mapbox
+export GITHUB_REPO=mapbox-gl-native
+
+BINARY_DIRECTORY=$2
+PUBLISH_PRE_FLAG=''
+GITHUB_RELEASE=false
+
+echo "Deploying version ${PUBLISH_VERSION}..."
+
+if [[ ${#} -eq 3 &&  $3 == "-g" ]]; then
+    GITHUB_RELEASE=true
+fi
+ 
+make clean && make distclean
+
+if [[ "${GITHUB_RELEASE}" == true ]]; then
+    echo "Create  GitHub release..."
+    if [[ $( echo ${PUBLISH_VERSION} | awk '/[0-9]-/' ) ]]; then
+        PUBLISH_PRE_FLAG='--pre-release'
+    fi
+    github-release --verbose release --tag "ios-v${PUBLISH_VERSION}" --name "ios-v${PUBLISH_VERSION}" --draft ${PUBLISH_PRE_FLAG}
+fi
+
+buildPackageStyle "ipackage" "symbols"
+buildPackageStyle "ipackage-strip"
+buildPackageStyle "iframework" "symbols-dynamic"
+buildPackageStyle "iframework SYMBOLS=NO" "dynamic"
+buildPackageStyle "ifabric" "fabric"