Added readme text

Signed-off-by: Joppe Blondel <joppe@blondel.nl>

README.md

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+# Remotesyn
+
+```
+$> remotesyn -h
+Unified FPGA synthesizer frontend
+(c) Joppe Blondel - 2022
+
+Usage: /home/joppe/.local/bin/remotesyn [ OPTIONS ] action [ target ] ...
+where OPTIONS := { -h | -l | -s host:port privkey pubkey authorized | -c config | -b build_dir }
+      action  := { ip | syn | impl | bit | all | floorplan | sim | init }
+
+Options:
+  -h                 Show this help message
+  -l                 Local build
+  -s <s-info>        Start server with server information s-info. host:port is the address to bind
+                     to, privkey and pubkey are the ssh keys of the server and authorized is the
+                     authorized_keys file for the SSH server
+  -c <file>          Configuration file, defaults to project.cfg
+  -b <dir>           Build directory, defaults to .build
+
+Actions:
+ip <target>          Generate IP files from vendor provided libraries
+syn <target>         Synthesize design for target
+impl <target>        Route and place design for target
+bit <target>         Generate output files and run analysis for target
+all <target>         Generate IP, synthesize, route and place design for target
+floorplan <target>   Run floorplan editor, currently only for local execution
+sim <simtarget>      Run simulation target
+init                 Initialize project
+```