Create README.md

README.md

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+# Qora2
+
+To use:
+
+- Use maven to fetch dependencies.
+- Build project.
+- Fire up an old-gen Qora node.
+- Run ```src/test/update.java``` as a JUnit test to build DB structure.
+- Run ```src/test/migrate.java``` as a JUnit test to migrate old Qora blocks to DB.
+
+You should now be able to run ```src/test/load.java``` and ```src/test/save.java```
+as JUnit tests demonstrating loading/saving Transactions from/to database.
+
+You can also examine the migrated database using 
+[HSQLDB's "sqltool"](http://www.hsqldb.org/doc/2.0/util-guide/sqltool-chapt.html).
+
+It's a good idea to install "rlwrap" (ReadLine wrapper) too as sqltool doesn't
+support command history/editing!
+
+Typical command line for sqltool would be:
+```
+rlwrap java -cp ${HSQLDB_JAR}:${SQLTOOL_JAR} org.hsqldb.cmdline.SqlTool --rcFile=${SQLTOOL_RC} qora
+```
+
+```${HSQLDB_JAR}``` contains pathname to ```hsqldb-2.4.0.jar```, 
+typically ```${HOME}/.m2/repository/org/hsqldb/hsqldb/2.4.0/hsqldb-2.4.0.jar```
+
+```${SQLTOOL_JAR}``` contains pathname to where you 
+[downloaded sqltool-2.2.6.jar](http://search.maven.org/remotecontent?filepath=org/hsqldb/sqltool/2.2.6/sqltool-2.2.6.jar)
+
+```${SQLTOOL_RC}``` contains pathname to a text file describing Qora2 database, 
+e.g. ```${HOME}/.sqltool.rc```, with contents like:
+
+```
+urlid qora
+url jdbc:hsqldb:file:db/test
+username SA
+password
+```
+
+You could change the line ```url jdbc:hsqldb:file:db/test``` to use a full pathname for easier use.
+
+Another idea is to assign a shell alias in your ```.bashrc``` like:
+```
+alias sqltool='rlwrap java -cp ${HSQLDB_JAR}:${SQLTOOL_JAR} org.hsqldb.cmdline.SqlTool --rcFile=${SQLTOOL_RC}'
+```
+So you can simply type: ```sqltool qora```