Execute this in Terminal
export PATH=~/anaconda3/bin:$PATH
Worked for me on Ubuntu 16.10, Python3, Anaconda3
UPDATE
Add path in your ~/.bashrc or ~/.zshrc(if you are using zsh bash) file
vi ~/.bashrc
add the below line to the file
PATH=~/path/to/anaconda:$PATH
Close the file with
esc + : + wq