Add readme and todo

ext/sqlite/README

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+This is an extension for the SQLite Embeddable SQL Database Engine.
+http://www.sqlite.org/
+
+SQLite is a C library that implements an embeddable SQL database engine.
+Programs that link with the SQLite library can have SQL database access
+without running a separate RDBMS process.
+
+SQLite is not a client library used to connect to a big database server.
+SQLite is the server. The SQLite library reads and writes directly to and from
+the database files on disk
+
+
+
+vim:tw=78:et

ext/sqlite/TODO

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+- Implement safe-mode checks on the filename when opening/creating the
+  database.
+
+- Implement a generic php function handler for use in SQL statements and
+  triggers etc.
+
+- Create a package.xml and make a release
+
+vim:tw=78