Add php-7.0.0alpha2 (Issue #108)

Adding 7.0 to travis

Fixes for the reviewed code

Fixes to have the directory as 7.0

Change version on travis

Remove GPG from Dockerfile on 7.0

update.sh

@@ -3,13 +3,15 @@ set -e
 
 declare -A gpgKeys
 gpgKeys=(
+	[7.0]='1A4E8B7277C42E53DBA9C7B9BCAA30EA9C0D5763'
 	[5.6]='6E4F6AB321FDC07F2C332E3AC2BF0BC433CFC8B3 0BD78B5F97500D450838F95DFE857D9A90D90EC1'
 	[5.5]='0BD78B5F97500D450838F95DFE857D9A90D90EC1 0B96609E270F565C13292B24C13C70B87267B52D'
 	[5.4]='F38252826ACD957EF380D39F2F7956BC5DA04B5D'
 	[5.3]='0B96609E270F565C13292B24C13C70B87267B52D 0A95E9A026542D53835E3F3A7DEC4E69FC9C83D7'
 )
 # see http://php.net/downloads.php
-
+alphaVersion="7.0"
+fullAlphaVersion="7.0.0alpha2"
 cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
 
 versions=( "$@" )
@@ -32,7 +34,12 @@ for version in "${versions[@]}"; do
 	done
 	if [ -z "$fullVersion" ]; then
 		echo >&2 "ERROR: missing $version in $packagesUrl"
-		continue
+		# if version is alpha then we add the missing part 
+		if [ "$alphaVersion" == "$version" ]; then
+			fullVersion="$fullAlphaVersion"
+		else
+			continue
+		fi
 	fi
 	
 	gpgKey="${gpgKeys[$version]}"
@@ -41,7 +48,7 @@ for version in "${versions[@]}"; do
 		echo >&2 "  try looking on http://php.net/downloads.php#gpg-$version"
 		exit 1
 	fi
-	
+
 	( set -x; cp docker-php-ext-* "$version/" )
 	
 	for variant in apache fpm; do