Added readme and license

LICENSE.md

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+Copyright (c) 2019 Ishan Jain
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+

README.md

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+# Neptune
+
+Neptune is my attempt at writing an Operating System from scratch in Rust.
+
+# Building
+
+1. You'll need nightly version of latest rust compiler. A simple, slightly dangerous way to do this is to run `curl -sSf https://sh.rustup.rs | bash` and follow the instructions.
+
+2. The OS for now uses BIOS to boot. I did not wrote the required ASM to boot into 16 bit and switch from 16 bit -> protected mode for this operating system because I had already done that in an older attempt at writing an operating system.
+So, For this project, I used [bootimage](https://crates.io/crates/cargo-bootimage). Install it using `cargo install cargo-bootimage`.
+
+
+# Running
+
+Run it in qemu with `qemu-system-x86_64 -drive format=raw,file=./target/neptune-x86_64/debug/bootimage-neptune.bin`
+
+
+# Future Plans
+
+1. Boot with UEFI.
+2. Implement a short term scheduler.
+3. Threads.
+4. A Graphics Subsystem, mainly to be used to implement games and not an actual GUI interface.
+
+
+# License
+
+MIT