src/platforms.js: Adding tizen.
README.md: Adding Tizen to list of supported platforms
Adding spec for Tizen platform
CB-5990 Delete unused findPlugins() function
CB-5017 accept proxy config for plugman

plugman does not honor proxy configuration. take the same apporach as
npm itself and use "request" module to handle proxy config.

this commit also introduces changes to dependencies:
 + request
 + tar
 - tar.gz
Print out only the version number for `plugman --version`

Merged from https://github.com/apache/cordova-plugman/pull/43
CB-4886 Initial addition of "plugman create"
CB-4886 Minor tweaks to Android & iOS plugman create templates.
Merge branch 'tizen' of https://github.com/gabrielschulhof/cordova-plugman

Conflicts:
	README.md
CB-6025 ios: Do not add static libraries (.a) to source files
CB-5885 Speed-up adding multiple plugins with plugman

* Cache and reuse already parsed ios project files
* Remove the now redundant cache in config-changes.add_plugin_changes
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cordova-plugman
Revert "Merge branch 'tizen' of https://github.com/gabrielschulhof/cordova-plugman"

This reverts commit 4eb4d2dc169840bdb55c13971f53acf8014ff6e8, reversing
changes made to ce8c421481ff04e87eaf81442e9504b6358c13c3.
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cordova-plugman into CB-5993