Update README with short project description and its goals
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# PCloud
+PCloud is a set of distributed infrustructure tools meant for setting up a personal cloud on commodity hardware such as Raspberry Pi.
+Goal of the project is to provide:
+* Blob storage: distributed file storage with configurable replication for redundancy
+* Namespace service: built on top of Blob storage to expose it, at least in read only mode, as a mountable file system
+* Metadata service: storing Blob annotations such as objects and their locations detected in the pictures
+* Search infrastructure: to index Blob metadata and provide search API
+* App infrastructure: to easily set up and run third party applications such as custom in picture object detection models
+
+To prove viability of the project first milestone will be to build fully functional image storage and indexing infrustructure. User experience setting it up will look somethink like:
+* Set up PCloud on 3 or more servers and pair mobile device with it
+* Configure IFTTT (if this then that) like worklfow to automatically:
+.. * Back up every newly taken picture on PCloud
+.. * Run face detection app on backed up pictures and store this information in Metadata service
+.. * Index face annotations and make them searchable
+User must be able to configure all of these from previously paired mobile device.
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