feat(ios): adapt build to post bintray world (#309)

Part of https://github.com/ooni/probe/issues/1437

MOBILE/ios/.gitignore

@@ -1 +1,2 @@
 /oonimkall.framework/
+/oonimkall.*

MOBILE/template.podspec

@@ -1,12 +1,12 @@
 Pod::Spec.new do |s|
   s.name = "oonimkall"
   s.version = "@VERSION@"
-  s.summary = "OONI Probe Engine for iOS"
+  s.summary = "OONI Probe Library for iOS"
   s.author = "Simone Basso"
-  s.homepage = "https://github.com/ooni/probe-engine"
+  s.homepage = "https://github.com/ooni/probe-cli"
   s.license = { :type => "BSD" }
   s.source = {
-    :http => "https://dl.bintray.com/ooni/ios/oonimkall-@VERSION@.framework.zip"
+    :http => "https://github.com/ooni/probe-cli/releases/download/@RELEASE@/oonimkall.framework.zip"
   }
   s.platform = :ios, "9.0"
   s.ios.vendored_frameworks = "oonimkall.framework"

MOBILE/template.pom

@@ -9,7 +9,7 @@
   <packaging>aar</packaging>
 
   <name>oonimkall</name>
-  <description>OONI Probe for Android</description>
+  <description>OONI Probe Library for Android</description>
   <url>https://github.com/ooni/probe-cli</url>
 
   <licenses>

build-ios.bash

@@ -7,3 +7,9 @@ go get -u golang.org/x/mobile/cmd/gomobile
 gomobile init
 output=MOBILE/ios/oonimkall.framework
 gomobile bind -target=ios -o $output -ldflags="-s -w" ./pkg/oonimkall
+release=$(git describe --tags)
+version=$(date -u +%Y.%m.%d-%H%M%S)
+podspecfile=./MOBILE/ios/oonimkall.podspec
+(cd ./MOBILE/ios && rm -f oonimkall.framework.zip && zip -yr oonimkall.framework.zip oonimkall.framework)
+podspectemplate=./MOBILE/template.podspec
+cat $podspectemplate|sed -e "s/@VERSION@/$version/g" -e "s/@RELEASE@/$release/g" > $podspecfile