Updated README to make install easier

README.md

@@ -1,4 +1,36 @@
-wal2json
-========
+# wal2json
 
 JSON output plugin for changeset extraction
+
+### Forked
+
+This is a fork of the great utility at https://github.com/eulerto/wal2json
+
+I take no credit for the C code. Just a little packaging. 
+
+Unfortunately, the source repository didn't make it into the postgres mainline source. Which makes it a bit tricky to compile with this makefile.  I updated the makefile, so it works.
+
+
+### Install Steps
+
+(On Debian)
+
+```
+# You need postgres 9.4 installed on your machine, you probably have it already
+sudo apt-get install postgres-9.4
+sudo apt-get install postgres-contrib-9.4
+
+# to compile this code, you need the following
+sudo apt-get install build-essential
+sudo apt-get build-dep postgresql-9.4
+sudo apt-get install postgres-server-dev-9.4
+
+# now go into the directory and...
+make
+sudo make install
+```
+
+
+### Logical Replication
+
+You need to know quite a few things about logical replication to make use of this.  If this is new to you, please check out [the official postgres documentation](http://www.postgresql.org/docs/9.4/static/logicaldecoding-example.html).  You can replace 'test_decoding' with 'wal2json' to see the magic of this plugin.