README: Add boldface and fix minor issues

Author: rmoehn

README.md

@@ -1,9 +1,9 @@
 pomdp2json
 ==========
 
-This is a converter from Anthony Cassandra's (Tony's) [POMDP File
-Format](http://www.pomdp.org/code/pomdp-file-spec.html) to JSON. I've spent an
-entire morning (my mornings are long) trying to load a POMDP files into Python.
+This is a converter from Anthony Cassandra's (Tony's) **[POMDP File
+Format](http://www.pomdp.org/code/pomdp-file-spec.html) to JSON**. I've spent an
+entire morning (my mornings are long) trying to load a POMDP file into Python.
 The existing tools are incomplete or hidden in large repositories or give me
 compilation headaches. I don't want anyone else to have to spend an entire
 morning, so I'm writing this tool that gives you a JSON file that can be read
@@ -18,8 +18,8 @@ POMDP file, it will produce a JSON file with the following contents:
  - Observation probability matrix: `|A| x |S| x |O|: [at, st+1, ot+1]`
  - Reward matrix: `|S| x |A|: [st, at]`
 
-Where is it incomplete? The POMDP format allows the reward to depend on action,
-state before action, state after action and observation. I leave out the
+Where is it **incomplete**? The POMDP format allows the **reward** to depend on
+action, state before action, state after action and observation. I leave out the
 dependency on state after action and observation, because I don't need it. It
 will be easy to add later if anyone needs it.
 
@@ -30,8 +30,8 @@ Compiling
     $ cat build.sh  # See that it's small and benign.
     $ ./build.sh
 
-You might need to install development tools like gcc before you can compile. Let
-me know if you have any difficulties.
+You might need to **install** development tools like CMake or gcc before you can
+compile. **Let me know if you have any difficulties.**
 
 
 Usage
@@ -46,8 +46,8 @@ Based on: pyrl.environments.libPOMDP
 I'm reusing a Python interface and compilation setup from Will Dabney's
 [python-rl](https://github.com/amarack/python-rl). All files except
 `pomdp2json.py` stem from the directory
-[libPOMDP](https://github.com/amarack/python-rl/tree/a1c1f5bc42cb20f5d9630818d1908f2100916ef4/pyrl/environments/libPOMDP)
-. Here's Will's description:
+[libPOMDP](https://github.com/amarack/python-rl/tree/a1c1f5bc42cb20f5d9630818d1908f2100916ef4/pyrl/environments/libPOMDP).
+Here is Will's description:
 
 > This is primarily code from pomdp-solve written by Anthony R. Cassandra. I've only added a
 > new makefile, which is not as sophisticated as the original, and some code to allow the whole thing
@@ -70,8 +70,8 @@ doesn't stick to that, pomdp2json will raise an exception.
 What can you do? In general, there is no easy way to convert a POMDP with a
 R(st, at, st+1, ot+1) reward function to a POMDP with a R(st, at) reward
 function. There might be a sophisticated way that I don't know. But there are
-also easy cases where you can fiddle with the original POMDP file. For example,
-`hallway.POMDP` defines this reward function:
+also easy cases where you can **fiddle with the original POMDP file**. For
+example, `hallway.POMDP` defines this reward function:
 
 ```
 # Rewards
@@ -92,8 +92,8 @@ R: * : 59 : * : * 1.000000
 ```
 
 …then the POMDP (file) will be compatible with pomdp2json and in turn with tools
-like [piglet_pbvi](https://github.com/rmoehn/piglet_pbvi). Is it the same POMDP
-as the original? Maybe not. But I guess it's almost the same.
+like [piglet_pbvi](https://github.com/rmoehn/piglet_pbvi). Is it the **same
+POMDP as the original?** Maybe not. But I guess it's almost the same.
 
 
 To do