.bashrc - document use of exporting `JAVA_HOME` environment variable

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
.bashrc - source $HOME/secret.sh if it exists

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
.bashrc - remove unnecessary whitespace

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
Rename dotfiles to remove dot prefix

This is due to a change in how this repository will operate.
Instead of using the `$HOME` folder as the git repository and tracking the
dotfiles right there, we will be using the `$HOME/dotfiles` directory to
house this repository. The actual dotfiles in the `$HOME` folder will
source / import those tracked in this repository.

More detailed setup instructions are available in a newly added
`README.md` file.

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
Add .gitignore

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
vimrc - set expandtab, autoindent

Too lazy to type these manually all the time

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>