changed placeholder files to markdown files

devtools/README.md

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+# Development tools
+
+__fake_java.py__ can be used to get the command used to start Minecraft. When run, it will create a file called `fake_java_out.txt` in its working directory.
+__rmpyc__ removes all `.pyc` files in the current working directory and all subdirectories.

lib/jar/README.md

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+# lib/jar
+
+This directory will contain all libraries Minecraft relies on.
+As Minecraft itself is specified as a library for Forge on the command line, its version jar goes here as well.
+
+Unfortunately, I cannot put them here for convenience due to copyright laws.
+

lib/launcher/java/runtime/README.md

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+# libs/launcher/java/runtime
+I intend to package a java runtime with the launcher as it helps to prevent some issues. For instance, Minecraft runs only on Java 8 and below. If the default JRE on the operating system’s path is not Java 8, Minecraft will not even launch sucessfully.

lib/launcher/python/README.md

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+# lib/launcher/python
+
+__gui.py__ will contain the GUI (Wow! Really?). The GUI will be accessed by `main.py`.
+__mchandler.py__ will be the launcher library. This time, it will not be a runnable hybrid library.
+__updater.py__ will be used for updating the mod pack and possibly the launcher as well.

lib/launcher/python/runtime/placeholder

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+I intend to ship the launcher with a Python runtime included because not all of the Windowze noobs out there will want to install Python themselves.

lib/natives/README.md

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+# lib/natives
+This directory will contain the natives used by Minecraft.